Comprehensive list of OEM b5 a4 brake upgrades [Archive]

GrapeBandit

03-21-2016, 07:02 AM

There has been a few threads lately in regardes to brake upgrades, so I figure I will try to compile a list of both front and rear upgrades so we have everything in one place for ease of future reference.

This list is incomplete as of now, I DO NOT know what is required to run ALL of these setups on both pre-facelift and facelift cars. With the help of the rest of you guys, I hope to complete this list. If anyone has anything to add(part #'s, tips/tricks, other notable setups, etc.), post it and I will edit it into the 1st and 2nd posts.

FRONT-

D2 A8 BBK:
B5 A4 Calipers
D2 A8 312mm x 25mm rotors 8E0 615 301 R
TT Carriers 1J0 615 125 A
Requires new brake lines?N

Boxster 986 BBK:
Boxster 986 Caliper Rt 986 351 422 03
Boxster 986 Caliper Lt 986 351 421 03
D2 A8 312mm x 25mm rotors 8E0 615 301 R
TT Carriers 1J0 615 125 A or Apikol/PureMS brackets
Requires new brake lines?Y

Boxster S BBK:
Boxster S Caliper Rt 996 351 426 11
Boxster S Caliper Lt 996 351 425 11
D2 A8 312mm x 25mm rotors 8E0 615 301 R
or
B5 S4 321mm x 30mm rotors 8E0 615 301 AD
Apikol/PureMS brackets
Requires new brake lines?Y

Porsche 993TT BBK:
993TT Caliper Rt 993 351 426 10
993TT Caliper Lt 993 351 425 10
B5 S4 321mm x 30mm rotors 8E0 615 301 AD
or
Apikol 323mm x 32mm 2-piece floating rotors
or
Mercedes Benz C230 330mm x 28mm rotors 203 421 13 12 *(machine center hub a few mm, and drill lug bolt holes to 14mm) (with corresponding brackets)
or
Volvo V70R/S60R 306 452 22 330mm x 32mm *(open lug holes with a 3/4" bit, and minimal grinding to uprights) (with corresponding brackets)
Apikol/2Bennett brackets
Requires new brake lines?Y
•Notes• A.K.A. Porsche Brembo Big Red/Black found on both 993s and 928GTSs

All 17z/18z calipers will bolt directly to the S4 uprights. No brackets required. You will need associated hardware for them to bolt on which is about $40 from audibbkparts.
All 17z/18z calipers use the same SS brake lines as far as I know. They are a banjo fitting on the caliper.
If you choose to swap to B5 S4 uprights instead of running the brackets. . .

This is specifically for the conversion to S4 uprights:
Aluminum S4 uprights: Requires a new straight lower control arm. This control arm uses a longer, thinner balljoint
Steel S4 uprights: Regular control arms can be used. The A4/late S4 straight control arm has shorter, fatter balljoints

Axles:
All V6 axles will work for this application. Be cognizant of Auto/manual.
The only 1.8T axles that work for the S4 upright conversion are the 01, as Audi switched to 82mm wheel bearings at that time.

Unless you are 5-speed FWD (and installing S4 uprights). Then S4 axles actually do work.
17z 330mm BBK:
17z Caliper Rt Porsche 955 351 422 33/Touareg 7L6 615 124 H/Audi Q7 7L6 615 149
17z Caliper Lt Porsche 955 351 421 32/Touareg 7L6 615 123 T/Audi Q7 7L6 615 150
Mercedes Benz C230 330mm x 28mm rotors 203 421 13 12 *(machine center hub a few mm, drill lug bolt holes to 14mm, and need 2mm Apikol shim or steel washers)
or
Volvo V70R/S60R 306 452 22 330mm x 32mm *(open lug holes with a 3/4" bit, and minimal grinding to uprights)
Apikol 2-piece 330x32mm rotors
Apikol brackets
Requires new brake lines?Y
Confirmed fitment-Centric (Stoptech branded) 950.33005 brake lines

17z 345mm BBK:
17z Caliper Rt???
17z Caliper Lt???
rotors???
Apikol brackets
Requires new brake lines?Y
Confirmed fitment-Centric (Stoptech branded) 950.33005 brake lines

18z BBK:
18z Caliper Rt 7L6 615 150
18z Caliper Lt 7L6 615 149
17z brake pads
Mercedes Benz C32 AMG 345mm x 30mm rotors 203 421 09 12
Apikol brackets
Requires new brake lines?Y
Confirmed fitment-Centric (Stoptech branded) 950.33005 brake lines

B6/B7/B8 345mm BBK:
*Requires B5 S4 upright conversion*
B8 S4 Caliper Rt 8K0 615 124 G
B8 S4 Caliper Lt 8K0 615 123 G
B6/B7 S4 345mm x 30mm rotors 8E0 615 301 T
B8 S4 Carrier Rt 8T0 615 126
B8 S4 Carrier Lt 8T0 615 125
Requires new brake lines?Y/N?

GrapeBandit

03-21-2016, 07:04 AM

REAR-

C5 A6 255mm:
B5 A4 calipers
C5 A6 255mm x 10mm rotors 4B0 615 601 B
B6 A4 3.0L carriers 8E0 615 425 G
Requires new brake lines?N

B5 S4 256mm:
B5 S4 Caliper Rt 8D0 615 424 C
B5 S4 Caliper Lt 8D0 615 423 C
B5 S4 256mm rotors 8D0 615 601 D
B5 S4 Carriers 8D0 615 425
Requires new brake lines?N

D2 A8 269mm:
B5 S4 Caliper Rt 8D0 615 424 C
B5 S4 Caliper Lt 8D0 615 423 C
D2 A8 rotors 4D0 615 601B
D2 A8 Carriers 4D0 615 425 B
D2 A8 rotors 269mm *(2mm washer in between the bracket and the upright)
Requires new brake lines?N
•Notes• "Should be stated that C5 A6 calipers work, too (so you can get calipers and carriers from the same car, which helps a lot), the only downside being that it requires a different brake line due to the C5 using a banjo bolt at the caliper."-walky_talky20

B7 S4 300mm:
B5 S4 Caliper Rt 8D0 615 424 C
B5 S4 Caliper Lt 8D0 615 423 C
or
B6/B7 S4 Caliper Rt 8E0 615 424 C
B6/B7 S4 Caliper Lt 8E0 615 423 C -->grifrowl's B6/B7 S4 caliper D.I.Y<-- (http://www.audizine.com/forum/showthread.php/654216-My-junkyard-b5-brakes)
B7 S4 300mm x 22mm rotors 8E0 615 601R
Apikol/034 brackets
Requires new brake lines?Y
Confirmed fitment-Centric (Stoptech branded) 950.33005 brake lines

rodgertherabit

03-21-2016, 07:11 AM

Dont forget the b5/c5 V8/W8 Vented rear upgrade. its about a 12.5in vented rotor set up.

I run it.

GrapeBandit

03-21-2016, 07:15 AM

Dont forget the b5/c5 V8/W8 Vented rear upgrade. its about a 12.5in vented rotor set up.

I run it.
PM me the info or post it here. either way, I will edit my post[up] once I have the info

RS4Avant2be

03-21-2016, 12:28 PM

coolgraymemo

03-21-2016, 12:50 PM

Porsche 993TT BBK:
993TT Caliper Rt 993 351 426 10
993TT Caliper Lt 993 351 425 10
B5 S4 321mm x 30mm rotors 8E0 615 301 AD
or
Apikol 323mm x 32mm 2-piece floating rotors
Apikol brackets
Requires new brake lines?Y/N???

2Bennett also offers a 993tt kit over 330mm rotors.

Brake lines are needed.

a4kamila6

03-21-2016, 01:38 PM

Dont the ATE G60's with 320mm x 25mm discs plus A6 carriers also work for front?

GrapeBandit

03-21-2016, 03:27 PM

Rear - inexpensive option

A6 upgrade (255 mm x 10 mm)

A6 2002 3.0L & 2.7TL Q (C5) rotors 4B0 615 601 B
A4 B6 (2002) 3.0L Carriers 8E0 615 425 G

Stock A4 B5 Calipers & Pads & brake lines

Works well with A8 front upgrade
tnx[up]added

2Bennett also offers a 993tt kit over 330mm rotors.

Brake lines are needed.are brake lines are needed for all 993TT kits?

walky_talky20

03-21-2016, 06:53 PM

Dont forget the b5/c5 V8/W8 Vented rear upgrade. its about a 12.5in vented rotor set up.

I run it.

This is the "D2 A8 269mm" option.

Should be stated that C5 A6 calipers work, too (so you can get calipers and carriers from the same car, which helps a lot), the only downside being that it requires a different brake line due to the C5 using a banjo bolt at the caliper. A8 or W8 calipers won't work because the e-brake hookup is a bit different.

Bordom

03-21-2016, 06:54 PM

are brake lines are needed for all 993TT kits?

Yes because banjo fitting on the calipers.

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tymatk

03-21-2016, 07:48 PM

GrapeBandit

03-21-2016, 08:02 PM

In need for rear brake, already got A8 front, this helps alot, thanks. Would these do ....

Audi / A4 / 2001 / Sedan / Red / Automatic WAUZZZ8E12A10XXXX ALT059265
Audi / A4 / 2003 / Sedan / Black / Automatic WAUZZZ8E53A38XXXX BFB033291
Audi / A6 / 1995 / Wagon / Black / Automatic WAUZZZ4AZSN09XXXX ABC132614

Just a list from my local wrecker.
the 2001 is good for the rear calipers.
the 2003 should have the carriers if its a 3.0.
the 1995 a6 has nothing for this brake upgrade.

Cactus Avant

03-21-2016, 10:36 PM

Thanks for organizing this thread [up]

coolgraymemo

03-21-2016, 10:47 PM

FRONT-
Boxster 986 BBK:
Boxster 986 Caliper Rt 986 351 422 03
Boxster 986 Caliper Lt 986 351 421 03
D2 A8 312mm x 25mm rotors 8E0 615 301 R
Apikol brackets
Requires new brake lines? Y

Boxster S BBK:
Boxster S Caliper Rt 996 351 426 11
Boxster S Caliper Lt 996 351 425 11
D2 A8 312mm x 25mm rotors 8E0 615 301 R
or
B5 S4 321mm x 30mm rotors 8E0 615 301 AD
Apikol/PureMS brackets
Requires new brake lines? Y

Porsche 993TT BBK:
993TT Caliper Rt 993 351 426 10
993TT Caliper Lt 993 351 425 10
B5 S4 321mm x 30mm rotors 8E0 615 301 AD
or
Apikol 323mm x 32mm 2-piece floating rotors
or
Mercedes Benz C230 330mm x 28mm rotors 203 421 13 12 *(machine center hub a few mm, and drill lug bolt holes to 14mm) (with corresponding brackets)
or
Volvo V70R/S60R 306 452 22 330mm x 32mm *(open lug holes with a 3/4" bit, and minimal grinding to uprights) (with corresponding brackets)
Apikol/2Bennett brackets
Requires new brake lines?Y

17z 330mm BBK:
17z caliper Rt Porsche 955 351 422 33/Touareg 7L6 615 124 H/Audi Q7 7L6 615 149
17z caliper Lt Porsche 955 351 421 32/Touareg 7L6 615 123 T/Audi Q7 7L6 615 150
Mercedes Benz C230 330mm x 28mm rotors 203 421 13 12 *(machine center hub a few mm, and drill lug bolt holes to 14mm)
or
Volvo S60R 306 452 22 330mm x 32mm *(open lug holes with a 3/4" bit, and minimal grinding to uprights)
Apikol 2-piece 330x32mm rotors
Apikol brackets
Requires new brake lines? Y

18z BBK:
18z Caliper Rt 7L6 615 150
18z Caliper Lt 7L6 615 149
Rotors???
Apikol 17Z adapters are supposed to also work for 18Z calipers.
Brackets???
Requires new brake lines? Y

My edits are bold.

BIRA also offered a few options.

The 993tt section should note that they are also known as Porsche Brembo Big Red/Black and are found on both 993s and 928GTSs.

10kredline

03-22-2016, 12:11 AM

Don't forget, instead of the bracket/ tt brackets setup, there's also the S4 uprights along with s4 axles in order to use the s4 calipers and certain Porsche/Brembo if I'm not mistaken.

Bordom

03-22-2016, 04:56 AM

Don't forget, instead of the bracket/ tt brackets setup, there's also the S4 uprights along with s4 axles in order to use the s4 calipers and certain Porsche/Brembo if I'm not mistaken.
You can't use S4 axles if 5spd. V6 axles and 01 1.8T axles are what you want

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GrapeBandit

03-22-2016, 05:50 AM

My edits are bold.

BIRA also offered a few options.

The 993tt section should note that they are also known as Porsche Brembo Big Red/Black and are found on both 993s and 928GTSs.
will add[up]
also, the bira.org site is down for a while. so im not sure if they are still making kits or not. any more info on BIRA?

Don't forget, instead of the bracket/ tt brackets setup, there's also the S4 uprights along with s4 axles in order to use the s4 calipers and certain Porsche/Brembo if I'm not mistaken.

You can't use S4 axles if 5spd. V6 axles and 01 1.8T axles are what you want

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you guys want to get me a complete list and ill add to the OP.

B5 S4 uprights, V6 or 1.8t axles. what else, I know theres more

redline380

03-22-2016, 06:28 AM

I think you would be best off editing the OP to clearly identify which upgrades can be done without swapping uprights/getting brackets.

Then add ones which brackets are available for.

Then add ones which bolt up to S4 uprights.

Links to relevant threads for the upgrades would be useful as well.

Bordom

03-22-2016, 06:36 AM

This is specifically for the conversion to S4 uprights:

Aluminum S4 uprights: Required a new straight lower control arm. This control arm uses a longer, thinner balljoint
Steel S4 uprights: Control regular control arms can be used. The A4/late S4 straight control arm have shorter, fatter balljoints

Axles:
All V6 axles will work for this application. Be cognicent of Auto/manual
The only 1.8T axles that work for the S4 upright conversion are the 01, as Audi switched to 82mm wheel bearings at that time.

All 17z/18z calipers will bolt directly to the S4 uprights. No brackets required. You will need associated hardware for them to bolt on which is about $40 from audibbkparts.
All 17z/18z calipers use the same SS brake lines as far as I know. They are a banjo fitting on the caliper.

redline380

03-22-2016, 06:41 AM

All 17z/18z calipers use the same SS brake lines as far as I know. They are a banjo fitting on the caliper.

Confirmed fitment of Centric (Stoptech branded) 950.33005 brake lines for 17z/18z calipers, AND 300mm rear upgrade.

Bordom

03-22-2016, 06:44 AM

Confirmed fitment of Centric (Stoptech branded) 950.33005 brake lines for 17z/18z calipers, AND 300mm rear upgrade.

You use the same lines for the 17z/18z front as for thw rear 300mm? This is news to me

redline380

03-22-2016, 06:48 AM

You use the same lines for the 17z/18z front as for thw rear 300mm? This is news to me

You can use whatever you like, but I had trouble confirming fitment before I ordered. Those are admittedly a bit long for the rear, but they work.

Maybe OP should also note that you have to brake the plastic holder for the parking brake cable when doing the 300mm upgrade.

Bordom

03-22-2016, 06:50 AM

You can use whatever you like, but I had trouble confirming fitment before I ordered. Those are admittedly a bit long for the rear, but they work.

Maybe OP should also note that you have to brake the plastic holder for the parking brake cable when doing the 300mm upgrade.
Interesting. Thanks!

You have to break it when replacing the parking brake regardless. It really does nothing

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GrapeBandit

03-22-2016, 08:33 AM

walky_talky20

03-22-2016, 09:38 AM

Im not aware of any conversion that doesnt need swapped uprights or different carriers/brackets to work.

I think he means adapter brackets. So you can do 17z by using A4 uprights and adapters, or you can swap in S4/C5/B6 uprights and bolt them on without adapters. Further, once you swap the uprights, more options open up (options for which A4 adapters do not exist).

walky_talky20

03-22-2016, 09:41 AM

You can't use S4 axles if 5spd.

Unless you are 5-speed FWD (and installing S4 uprights). Then S4 axles actually do work.

demonmk2

03-22-2016, 09:44 AM

on the 986 bbk (312x25) you can use the usrt mk1 TT brackets/adapters too. I bring it up because they're about 100 bucks cheaper.

also, you can swap b8 s4 brakes/brackets with ( 345mm b7/b6rotor) on a b5 S4

Bordom

03-22-2016, 09:55 AM

REAR-
B5 S4 256mm:
B5 S4 Caliper Rt 8D0 615 424 C
B5 S4 Caliper Lt 8D0 615 423 C
B5 S4 256mm rotors 8D0 615 601 D
B5 S4 Carriers 8D0 615 425
Requires new brake lines?Y/N??? <-- Does not require new brake lines. A4/S4 lines are interchangeable

Answer in bold red.

Also, can you fix my horrid grammar in the first post? I didn't realize it was that mucked. Lol

10kredline

03-22-2016, 11:07 AM

You can't use S4 axles if 5spd. V6 axles and 01 1.8T axles are what you want

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Correct, Im using steel s4 uprights with v6 axles. But what I wasnt sure of is if the aftermarket brakes will bolt right up to the uprights or not.

xdewaynex

03-22-2016, 04:35 PM

Thats a nice list of upgrades. Ive already done the S4 rear swap and can confirm the A4 lines do work. Im planning on doing 17z upgrade in the front with the Apikol adapter brackets because I dont want to deal with swapping axles, uprights and control arms.

Blur2u

03-22-2016, 04:58 PM

I have the 17z setup with the apikol adapters, you have to grind a little bit to make it fit. Also if you're planning on running the Merc rotors you need to get a shim, i can't remember what size though, probably 2mm. Apikol sells the shim also.

I'm planning on doing the S4 300mm rears soon also.

Thats a nice list of upgrades. Ive already done the S4 rear swap and can confirm the A4 lines do work. Im planning on doing 17z upgrade in the front with the Apikol adapter brackets because I dont want to deal with swapping axles, uprights and control arms.

- - - Updated - - -

Thanks for organizing this OP!

GrapeBandit

03-22-2016, 06:02 PM

on the 986 bbk (312x25) you can use the usrt mk1 TT brackets/adapters too. I bring it up because they're about 100 bucks cheaper.
i forgot that you can use TT brackets on the boxster calipers. is this true for the boxster "s" calipers too? OP updated[up]

Also, can you fix my horrid grammar in the first post? I didn't realize it was that mucked. Lol
geez, now you want me to fix the past for you?[;)]

Big thanks all who are contributing to the information in this thread.[az]

xdewaynex

03-22-2016, 06:18 PM

i forgot that you can use TT brackets on the boxster calipers. is this true for the boxster "s" calipers too? OP updated[up]

These brackets here? http://www.usrallyteam.com/index.php?main_page=product_info&products_id=1893

If the Boxster S calipers are compatible, I may just go that route. A few pairs are on ebay at this moment.

GrapeBandit

03-22-2016, 06:21 PM

These brackets here? http://www.usrallyteam.com/index.php?main_page=product_info&products_id=1893

If the Boxster S calipers are compatible, I may just go that route. A few pairs are on ebay at this moment.
no, those are adapter brackets to fit Brembo 4-piston calipers to Mk4 Volkswagen/ Mk1 Audi TT spindles.

you need the stock MKI tt carriers that ppl use for the A8 312mm upgrade.
TT carriers 1J0 615 125 A

coolgraymemo

03-22-2016, 06:40 PM

no, those are adapter brackets to fit Brembo 4-piston calipers to Mk4 Volkswagen/ Mk1 Audi TT spindles.

you need the stock MKI tt carriers that ppl use for the A8 312mm upgrade.
TT carriers 1J0 615 125 A

PureMS indicates that those cars use the same adapters as B5 A4s (link (http://www.purems.com/Products/BS002.PURE-Motorsport-Boxster-Caliper-Brackets)).

xdewaynex

03-22-2016, 06:45 PM

no, those are adapter brackets to fit Brembo 4-piston calipers to Mk4 Volkswagen/ Mk1 Audi TT spindles.

you need the stock MKI tt carriers that ppl use for the A8 312mm upgrade.
TT carriers 1J0 615 125 A

I think I might have confused you, because Im talking about using the 986 calipers with A8 rotors, not my A4 calipers.

GrapeBandit

03-22-2016, 06:54 PM

PureMS indicates that those cars use the same adapters as B5 A4s (link (http://www.purems.com/Products/BS002.PURE-Motorsport-Boxster-Caliper-Brackets)).didnt see that. thanks for pointing it out

I think I might have confused you, because Im talking about using the 986 calipers with A8 rotors, not my A4 calipers.
yea, my fault.

you can use MKI TT carriers which can be sourced cheaper than CNC brackets

tymatk

03-22-2016, 11:12 PM

the 2001 is good for the rear calipers.

You meant Rotors?

OverSpun

03-23-2016, 12:21 AM

Good thread! [:)][up]

Possibly eventually sticky this in the Tech FAQ (http://www.audizine.com/forum/forumdisplay.php/105-B5-A4-FAQs-amp-DIYs) forum.

melomandn

03-23-2016, 07:56 AM

redline380

03-23-2016, 08:10 AM

Out of curiosity, why don't people run B6/B7 S4 front brakes on B5 S4 spindles? Demonmk2 touched on it, although mentioned B8 calipers. Any reason the B6/B7 calipers wont work? Seems like a cheap alternative to get a big (345mm) setup up front.

Because if I am going through that much work, I want something pretty. And 17z/18z isn't that much more.

Bordom

03-23-2016, 08:49 AM

Great thread, wish this was put together 5 years ago.

Out of curiosity, why don't people run B6/B7 S4 front brakes on B5 S4 spindles? Demonmk2 touched on it, although mentioned B8 calipers. Any reason the B6/B7 calipers wont work? Seems like a cheap alternative to get a big (345mm) setup up front.
Because its a poor single piston caliper with a larger rotor. Sure it's far superior to the stock brakes, but what's the point?

Redline words it well. If you're going to go that big, may as well get something pretty to look at

Because if I am going through that much work, I want something pretty. And 17z/18z isn't that much more.

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GrapeBandit

03-23-2016, 10:57 AM

Rear - inexpensive option

A6 upgrade (255 mm x 10 mm)

A6 2002 3.0L & 2.7TL Q (C5) rotors 4B0 615 601 B
A4 B6 (2002) 3.0L Carriers 8E0 615 425 G

Stock A4 B5 Calipers & Pads & brake lines

Works well with A8 front upgrade

In need for rear brake, already got A8 front, this helps alot, thanks. Would these do ....

Audi / A4 / 2001 / Sedan / Red / Automatic WAUZZZ8E12A10XXXX ALT059265
Audi / A4 / 2003 / Sedan / Black / Automatic WAUZZZ8E53A38XXXX BFB033291
Audi / A6 / 1995 / Wagon / Black / Automatic WAUZZZ4AZSN09XXXX ABC132614

Just a list from my local wrecker.

the 2001 is good for the rear calipers.
the 2003 should have the carriers if its a 3.0.
the 1995 a6 has nothing for this brake upgrade.

You meant Rotors?
nope, i meant calipers. isnt the above what you are trying to accomplish? the c5 a6 255mm conversion? you cant use b5 a4 rotors for the a6 upgrade, you need the a6 255mm rotors

on the 986 bbk (312x25) you can use the usrt mk1 TT brackets/adapters too. I bring it up because they're about 100 bucks cheaper.

also, you can swap b8 s4 brakes/brackets with ( 345mm b7/b6rotor) on a b5 S4

Great thread, wish this was put together 5 years ago.

Out of curiosity, why don't people run B6/B7 S4 front brakes on B5 S4 spindles? Demonmk2 touched on it, although mentioned B8 calipers. Any reason the B6/B7 calipers wont work? Seems like a cheap alternative to get a big (345mm) setup up front.

Because if I am going through that much work, I want something pretty. And 17z/18z isn't that much more.

Because its a poor single piston caliper with a larger rotor. Sure it's far superior to the stock brakes, but what's the point?

Redline words it well. If you're going to go that big, may as well get something pretty to look at

Everything graciously mispelled by Android
so should i add it to the list, or not?

lmk

redline380

03-23-2016, 11:03 AM

The thing is, it is almost impossible to have an absolutely comprehensive list of brake upgrades. Literally any caliper ever produced *could* be installed on your car with the proper modifications. Nobody does the b6/7 s4 front upgrade because it doesnt have much to offer that similar kits do.

The main thing that opens us up to upgrades is B5 S4 uprights. After that, you can go up to B8's, TTRS, shit even R8 brakes may be an option (Hint hint- VW clearanced 2015 R8 v10 calipers down to $700 per side from $2200 per side. Search "R8" http://www.vwparts.com/parts-outlet-center/index.php If you want them even cheaper, put the PN's into GAP's wesbite and they can be had for $610/piece. Not sure what you would do for rotors since those calipers use cermaic rotors though!)

GrapeBandit

03-23-2016, 11:15 AM

The thing is, it is almost impossible to have an absolutely comprehensive list of brake upgrades. Literally any caliper ever produced *could* be installed on your car with the proper modifications.
lol. obviously with enough time and the proper funding, you can make anything fit.

maybe i worded it wrong, but by no means is it an "absolute" list. its more like a list of OEM parts that are readily available and commonly used to piece together your own BBK without feeling it in your pocket too much[wrench]

redline380

03-23-2016, 11:27 AM

its more like a list of OEM parts that are readily available and commonly used to piece together your own BBK without feeling it in your pocket too much[wrench]

I know what you meant [;)]

Here's how I see it.

Minimal effort- Decent set of pads and rotors.

DD with better power- A8 upgrade

DD with slightly better- A8 with B5 S4 rears

That basically keeps cost well below $1000 for all brand new stuff, but a savvy shopper would have around $500 invested in the entire setup.

If you want something over that, the door is wide open. But as we have discusses, you will be going B5 S4 uprights to fit whatever it is you want. IMO, you might as well skip all the lower stuff and just go 17z/18z depending on what you run for wheels. Upgrades like 986 could be considered, but I don't see much reason considered how cheap the 17z options are. However, 986 upgrade is a little more "bolt on ready" considering brackets are available and you dont have to do grinding/modifying rotors.

If you want something more than 17z, than screw you go look it up yourself. There is no reason to have that kind of braking on a street car. If it is a race car, talk to your race team.

Blur2u

03-23-2016, 11:47 AM

melomandn

03-23-2016, 09:13 PM

Because if I am going through that much work, I want something pretty. And 17z/18z isn't that much more.

This is the answer I expected, as I completely agree. Was purely curious.

demonmk2

03-24-2016, 06:00 AM

redline380

03-24-2016, 06:10 AM

As far as the b8 s4 calipers it's o good option if you want to run different wheels. I've noticed with 17z/18z it limits the wheel choices using those calipers. That's what my buddy ran into. So he went with the b8 s4 upgrade to run a 35et 18x9 mesh wheel

True.

I would like to mention that 17z's clear 17" Celebration wheels though. It is very tight, but they clear.

ElSabio182

03-24-2016, 09:04 AM

True.

I would like to mention that 17z's clear 17" Celebration wheels though. It is very tight, but they clear.

Might be a worthy endeavor for people to shout-out which setups will clear some popular wheel sizes (since that's gotta be the next-most-common question on this topic).

For self-serving purposes, I'm trying to find out if a 17z 330mm front / B5 S4 256mm rear setup will clear 17-inch B6 sport wheels…(which I believe are 17x7.5", ET45)

http://imagecdn2.panjo.com/images/2551b381-16c3-4f93-82e9-4ba4d7642e162.jpg

Great thread. Subscribed. Thanks!

GrapeBandit

03-24-2016, 10:52 AM

GrapeBandit just wanted to add that when i did my 17Z rotors using Mercedes Benz C230 330mm x 28mm rotors. I had to buy a 2mm shim that apikol sells (i guess you can use washers also) that will give the Mercedes rotors the correct offset, that way the rotors are centered in the 17z calipers. Also you will M12X1.5X25mm grade 10.9 brake caliper mounting bolt.
thanks. I will note it

Might be a worthy endeavor for people to shout-out which setups will clear some popular wheel sizes (since that's gotta be the next-most-common question on this topic).

For self-serving purposes, I'm trying to find out if a 17z 330mm front / B5 S4 256mm rear setup will clear 17-inch B6 sport wheels…(which I believe are 17x7.5", ET45)

http://imagecdn2.panjo.com/images/2551b381-16c3-4f93-82e9-4ba4d7642e162.jpg

Great thread. Subscribed. Thanks!
yes, the next thing I am going to do is try to add a list or wheels, or the size of wheels that these brake kits will clear

demonmk2

03-24-2016, 01:33 PM

also wanted to add that the ( used ) b8 S4 calepers/brackets and b6/b7 s4 rotors ( 345mm) cost about 500 bucks. so its a cheap big brake upgrade.
on an A4 you would have to use S4 B5 uprights

DoesntCare

03-29-2016, 10:46 AM

Any idea if the carriers from a 3.2L TT work for the basic upgrade in the front?

1.8t TT's have single piston calipers up front with a 12.3" rotor

3.2 TT's have dual piston calipers up front with a 13.15" rotor

I'm not seeing the part number you have listed for the TT carrier as fitting the 3.2L but I figured I'd double check

P/N I found on ECS for the 3.2L carrier is 8N0615125A

a4kamila6

03-29-2016, 11:17 AM

What i would like to know is if the carrier from an a6 c5 3.0 with 312mm rotors and g60 single piston ATE calipers will work with b5 a4 front calipers in order to do 288-312mm rotor upgrade?

Better yet, would the entire g60 caliper/carrier combo work with 312mm rotor on b5 a4 spindle?

Reason i ask is because i am trying to avoid spending 150 per TT carrier and at the moment, rockauto doesnt have any front TT carriers.

GOODBYNAAIR

03-29-2016, 11:32 AM

What i would like to know is if the carrier from an a6 c5 3.0 with 312mm rotors and g60 single piston ATE calipers will work with b5 a4 front caliper in order to do 288-312mm rotor upgrade?

Better yet, would the entire g60 caliper/carrier combo work with 312mm rotor on b5 a4 spindle?

Reason i ask is because i am trying to avoid spending 150 per TT carrier and at the moment, rockauto doesnt have any front TT carriers.

This is the same as the B6 A4 3.0 312mm and the B7 A4 "sport" breaks. you will need uprights if you don't have carriers. 98% sure, others will correct me if not.

Bordom

03-29-2016, 11:58 AM

If over B5 S4, uprights are required

a4kamila6

03-29-2016, 12:45 PM

This is the same as the B6 A4 3.0 312mm and the B7 A4 "sport" breaks. you will need uprights if you don't have carriers. 98% sure, others will correct me if not.

So to use g60 ATE calipers/carriers with 312mm rotor i need b5 s4 spindle? Or can i re-use b5 a4 spindle? I thought maybe i could get away with just using the caliper/carrier and not having to replace spindle.

If i need s4 spindle for this then i guess im better off just sourcing those TT carriers and re-using my old b5 a4 calipers with 312mm rotors?

Bordom

03-29-2016, 01:06 PM

It's the same diameter. If you're going to switch the S4 uprights, get a BBK that is going to perform a hundred fold over a single piston

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a4kamila6

03-29-2016, 02:34 PM

It's the same diameter. If you're going to switch the S4 uprights, get a BBK that is going to perform a hundred fold over a single piston

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Hmmm i was trying to avoid s4 uprights and just get 312mm rotors, leave b5 a4 calipers with TT carriers or get g60 ATE calipers with carriers and also use 312mm disc with b5 a4 upright.

And you are right if i upgrade to s4 spindle i might aswell go true bbk but the problem is my summer wheels are 17x7.5 et45 a6 stockers i got from someone, test fitted them over hp2's and they didnt clear, so that goes to show they probably wont clear a big caliper, would need at least 5-10mm spacer and i am trying to avoid spacers. Winter wheels are 16x7 et35 a4 stockers, and they will clear a 312mm rotor but i dont know about a true BBK. Trying to keep costs down as low as possible cause this is my daily and i should be wasting money on my 2.7 and not this.

Bordom

03-29-2016, 02:52 PM

Hmmm i was trying to avoid s4 uprights and just get 312mm rotors, leave b5 a4 calipers with TT carriers or get g60 ATE calipers with carriers and also use 312mm disc with b5 a4 upright.

And you are right if i upgrade to s4 spindle i might aswell go true bbk but the problem is my summer wheels are 17x7.5 et45 a6 stockers i got from someone, test fitted them over hp2's and they didnt clear, so that goes to show they probably wont clear a big caliper, would need at least 5-10mm spacer and i am trying to avoid spacers. Winter wheels are 16x7 et35 a4 stockers, and they will clear a 312mm rotor but i dont know about a true BBK. Trying to keep costs down as low as possible cause this is my daily and i should be wasting money on my 2.7 and not this.
The HP2 calipers are 10mm wider than 17z calipers. Which is ridiculous.

There is a 16" steelie that will fit over the HP2 brakes but I don't recall what it is.

Find the Mk1 TT carriers and use your A4 calipers. Forget the C5 3.0 brakes.

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walky_talky20

03-30-2016, 06:56 AM

Reason i ask is because i am trying to avoid spending 150 per TT carrier and at the moment, rockauto doesnt have any front TT carriers.

$300 in carriers! Dude, just dial up a junkyard that has an MKI TT. They'll sell you the calipers for like 30 bucks each. And they come with the carriers...for freezies. You might even get the pads and half a brake line. Literally everyone just gets reman calipers at Autozone these days, so junkyards have to basically give away their used calipers. Get in on that action.

Absolute worst case, you buy 2 reman TT calipers from RockAuto for $45 each, and eat the $40 core price on them. That's $170 total.

a4kamila6

03-30-2016, 07:04 AM

$300 in carriers! Dude, just dial up a junkyard that has an MKI TT. They'll sell you the calipers for like 30 bucks each. And they come with the carriers...for freezies. You might even get the pads and half a brake line. Literally everyone just gets reman calipers at Autozone these days, so junkyards have to basically give away their used calipers. Get in on that action.

Absolute worst case, you buy 2 reman TT calipers from RockAuto for $45 each, and eat the $40 core price on them. That's $170 total.

I didnt think of trying junkyard, good point man.

redline380

03-30-2016, 07:21 AM

I didnt think of trying junkyard, good point man.

That's B5 ownership 101

rodgertherabit

03-30-2016, 08:19 AM

If you want something more than 17z, than screw you go look it up yourself. There is no reason to have that kind of braking on a street car. If it is a race car, talk to your race team.

this made my day...

Im a huge advocate of the 986/boxster set up... I ran it on my MKIV (liked it better than my 18z set up actually) and currently run them on the b5 (with upgraded v8 rear brakes) and have never needed any more.

Keep in mind, im using Cheap $50 oreilly ceramics (lifetime warranty ftw) and if I ever need more Ill just buy better pads. maybe slot the rotors if you track it every once in a while.

demonmk2

03-30-2016, 09:43 AM

Hmmm i was trying to avoid s4 uprights and just get 312mm rotors, leave b5 a4 calipers with TT carriers or get g60 ATE calipers with carriers and also use 312mm disc with b5 a4 upright.

And you are right if i upgrade to s4 spindle i might aswell go true bbk but the problem is my summer wheels are 17x7.5 et45 a6 stockers i got from someone, test fitted them over hp2's and they didnt clear, so that goes to show they probably wont clear a big caliper, would need at least 5-10mm spacer and i am trying to avoid spacers. Winter wheels are 16x7 et35 a4 stockers, and they will clear a 312mm rotor but i dont know about a true BBK. Trying to keep costs down as low as possible cause this is my daily and i should be wasting money on my 2.7 and not this.

you could look for 986 Baxter calipers to use with the 312mmx25 rotors. and still use the a4 uprights.
no matter what I recommend upgrading the rears to at least S4 specs.

melomandn

03-30-2016, 09:57 AM

That's B5 ownership 101

For real tho

grifrowl

03-31-2016, 06:29 PM

B7 S4 300mm:
B5 S4 Caliper Rt 8D0 615 424 C
B5 S4 Caliper Lt 8D0 615 423 C
B7 S4 300mm x 22mm rotors 8E0 615 601R
Apikol/034 brackets
Requires new brake lines?Y
Confirmed fitment-Centric (Stoptech branded) 950.33005 brake lines

This can also be done with b6/7 S4 calipers, which are slightly bigger than b5 s4 calipers. Requires 10mm spacers and 10mm longer bolts than stock. Also requires 10mm to 12mm adaptors or b6 brake lines as outers.

http://www.audizine.com/forum/showthread.php/654216-My-junkyard-b5-brakes

grifrowl

03-31-2016, 06:38 PM

PS we have grabbed a few pairs of 17z calipers through worldpac for very respectable prices.

spinnin_four

07-05-2016, 03:25 PM

So i am a bit confused

i have an 01 A4

I have C5 A6 V8 rear calipers/ brackets and A8 rotors

The bracket will not fully bolt up to my knuckle, bracket interferes, which bracket do i need?

Bordom

07-05-2016, 04:46 PM

So i am a bit confused

i have an 01 A4

I have C5 A6 V8 rear calipers/ brackets and A8 rotors

The bracket will not fully bolt up to my knuckle, bracket interferes, which bracket do i need?

If you read the second post carefully, it says to use the A8 rotor/carrier with S4 calipers.

I'm not sure if the C5 V8 calipers are the same as the B5 S4 calipers

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spinnin_four

07-05-2016, 05:29 PM

If you read the second post carefully, it says to use the A8 rotor/carrier with S4 calipers.

I'm not sure if the C5 V8 calipers are the same as the B5 S4 calipers

Everything graciously mispelled by Android

I think i found a way to make the A6 caliper/carrier work with the A8 rotor,

I ground down the carrier at the point it was interfering with the knuckle

Then the next dilemma was the carrier offset was wrong causing rotor interference, i picked up some 2mm "shims" to space it out.

everything bolts up, parking brake, A6 brake hose connected into stock hard line, all is well so we shall see :)

155VERT83

07-23-2016, 04:14 AM

Quote Originally Posted by melomandn
"Out of curiosity, why don't people run B6/B7 S4 front brakes on B5 S4 spindles? Demonmk2 touched on it, although mentioned B8 calipers. Any reason the B6/B7 calipers wont work? Seems like a cheap alternative to get a big (345mm) setup up front."

Because if I am going through that much work, I want something pretty. And 17z/18z isn't that much more.

melomandn I went with the B6/B7 S4 front calipers & B5 S4 spindles option for my 2001 B5 A4 Avant 2.8Q (Tiptragic!). I wanted a low cost, bolt-on, OEM solution that required absolutely no grinding/clearancing. My B6 S4 calipers were $140 shipped (eBay: calipers $120/shipping $20). ECS Tuning: 345mm rotors $139 shipped- bought add'l $61 of stuff for "free shipping with $200 order"). My car is a daily driver (no track action) on horrible, congested Wash. DC/Northern VA roads. I can opt to move to the 17Z/18Z's later. For now I'm OK with the no-so-pretty B6/S4 calipers.

melomandn

07-23-2016, 09:00 AM

melomandn I went with the B6/B7 S4 front calipers & B5 S4 spindles option for my 2001 B5 A4 Avant 2.8Q (Tiptragic!). I wanted a low cost, bolt-on, OEM solution that required absolutely no grinding/clearancing. My B6 S4 calipers were $140 shipped (eBay: calipers $120/shipping $20). ECS Tuning: 345mm rotors $139 shipped- bought add'l $61 of stuff for "free shipping with $200 order"). My car is a daily driver (no track action) on horrible, congested Wash. DC/Northern VA roads. I can opt to move to the 17Z/18Z's later. For now I'm OK with the no-so-pretty B6/S4 calipers.

The more I think about it, I take back what I said earlier and believe this is a great route to take.

Even if you pick up a set from a scrapyard or car-part.com or whatever, 17/18z's will still cost 3 times as much as B6 S4 calipers. And as you said, if you want to upgrade later on, it is nice and easy.

Additionally, after seeing a few of these swaps in person, of course its not as visually pleasing as a set of Porsche Brembo's but it is still a nice visual upgrade. It fills out the wheel and the caliper looks huge in comparison to stock.

bikerbob951

07-25-2016, 05:11 AM

I just completed the rear A8 269mm brake upgrade, using B5 S4 rear calipers, C5 A6 V8 rear carriers, and PBR ultimate pads. This, along with my A8/TT front upgrade and SS lines has made a huge difference. Can confirm on spacers, I just used some flat washers I found on my workbench and the carriers mounted right up, no problems.

BTW, my 17x8 wheels barely clear the rear brakes, the back side of the wheel is about 1/8" from the caliper.

redline380

07-25-2016, 05:23 AM

BTW, my 17x8 wheels barely clear the rear brakes, the back side of the wheel is about 1/8" from the caliper.

Funny because I have plenty of clearance on my 300mm rear upgrade with 17" celebration wheels

pee quu

07-25-2016, 05:29 AM

Out of curiosity, why don't people run B6/B7 S4 front brakes on B5 S4 spindles? Demonmk2 touched on it, although mentioned B8 calipers. Any reason the B6/B7 calipers wont work? Seems like a cheap alternative to get a big (345mm) setup up front.

I put B7 A4 front calipers on my car. It was super cheap, painted them black I am even running them with the S4 caliper spring. Looks good and gets the job done. Gives more room for better wheel fitment compared to a 17z/18z caliper. Granted you need B5 S4 up rights to use these calipers.

bikerbob951

07-25-2016, 07:58 AM

Funny because I have plenty of clearance on my 300mm rear upgrade with 17" celebration wheels

Well the clearance I mentioned is from the back of the wheel face, not from the caliper to the rim.

Davdraco1

07-25-2016, 10:39 AM

That's an offset issue then.

pee quu

07-25-2016, 12:01 PM

bikerbob951

07-26-2016, 05:34 AM

it depends on the wheel is made, for example ccw you can have an et 35 on a 9.5'' wide wheel with a 3'' lip or u can have an et 35 on a 1'' lip. The way the wheel sits on the car doesn't change. The face just moves in and out depending on the lip size and the et stays the same. The 3'' lip will have a face with a smaller back pad limiting big brake fitment vs the wheel with a 1'' lip will have a large back pad giving plenty of room for big brake fitment

I think that's what I'm dealing with. My wheels are 17x8 et35, and there is room for the brakes, just not that much. It's just because they are cheap cast wheels, the back of the wheel face is probably thicker than some others. I'll probably be adding 10 or 15mm spacers when I go lower, so it's really not a big deal, just a passing observation.

elduderino200

07-26-2016, 01:28 PM

Bordom

07-26-2016, 01:33 PM

Side question:

Does anybody know the minimum thickness for the rotor for the A8/TT upgrade?

(D2 A8 312mm x 25mm rotors 8E0 615 301 R)

I'm looking into either paying someone to machine them down or just purchase new.
It's almost always 2-3mm. Why are you machining? The rotor is thin enough as is

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elduderino200

07-26-2016, 01:38 PM

MetalMan

07-26-2016, 02:00 PM

It'll be my third set of pads in 4-ish years

Yikes! I'm running Hawk HPS pads on my A8/TT setup. Have the same pads for nearly 3 years now, and doubt they're even half-way worn. But it's been only ~19k miles... with 50%-ish city driving.

elduderino200

07-26-2016, 02:06 PM

It's not my horrible driving skills, it's the odd situation I have with pads:

Bought the car with low pads that needed replacing. Replaced with cheapo correct kind but I wasn't familiar with the A8/TT upgrade so I bought cheap pads in case I made a mistake with fitment, but now they squeal and don't make me feel comfortable if I have to brake in an emergency.

I've got a set of Hawk HPS pads that have been sitting by my desk for a few months that are waiting to go on, but I haven't figured out if I should turn the rotors or just buy new. I don't want to stick them on the old rotors without at least turning them.

Bordom

07-26-2016, 03:07 PM

No special reason, just to save money before I put new pads on. It'll be my third set of pads in 4-ish years, I figure I should swap/machine the rotors as well.

edit: Wait the minimum thickness for the rotor is 2-3mm? You're right that is pretty thin.
No no no, 2-3mm lower than new lol so that would be 23-22mm rotor thickness

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OverSpun

10-14-2016, 01:58 AM

Moved to the Tech FAQ Forum-

GOODBYNAAIR

06-07-2017, 12:14 PM

D2 A8 BBK:
B5 A4 Calipers
D2 A8 312mm x 25mm rotors 8E0 615 301 R
TT Carriers 1J0 615 125 A
Requires new brake lines?N

Boxster 986 BBK:
Boxster 986 Caliper Rt 986 351 422 03
Boxster 986 Caliper Lt 986 351 421 03
D2 A8 312mm x 25mm rotors 8E0 615 301 R
TT Carriers 1J0 615 125 A or Apikol/PureMS brackets
Requires new brake lines?Y

How does the TT carrier work with the 986? I have the ECS Junk 330mmx25mm rotors (ECS does not make them any more) right now and there larger stg carriers. They hold the caliper to far away from the hub for 312mm A8. I have been waiting on swapping to the PureMS Boxster Caliper Brackets looking for other options. I have a TT sitting in my local yard so if I can use the TT carrier with the 986 caliper and A8 312mm rotor than that saves me alot of $$$$$ If that really bolts up ???

PureMS Boxster Caliper Brackets
http://i63.photobucket.com/albums/h144/goodbynaair/CAR/PureMS%20Boxster%20Caliper%20Brackets_zpstlieixjp. jpg (http://s63.photobucket.com/user/goodbynaair/media/CAR/PureMS%20Boxster%20Caliper%20Brackets_zpstlieixjp. jpg.html)

OEM TT
http://i63.photobucket.com/albums/h144/goodbynaair/CAR/TT_zpsl6eypqsy.jpg (http://s63.photobucket.com/user/goodbynaair/media/CAR/TT_zpsl6eypqsy.jpg.html)

how does this work?

demonmk2

06-07-2017, 04:11 PM

The tt caliper brackets work with factory calipers that came on you a4. It just puts them out so you can use a8 rotors.
Usrt sales a bracket for the 986 just get them for a mk1 TT about 160 shipped.

GOODBYNAAIR

06-07-2017, 08:46 PM

Thanks that makes more sense maybe I read it wong. I thought maybe some way to mod the tt carrier or something idk lol.

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GOODBYNAAIR

10-09-2017, 11:16 AM

The tt caliper brackets work with factory calipers that came on you a4. It just puts them out so you can use a8 rotors.
Usrt sales a bracket for the 986 just get them for a mk1 TT about 160 shipped.

So then I will need the 312mmx25 TT rotor or is it like all the other 986 carries and I'll need the D2 A8 312x25mm rotor?

Bordom

10-09-2017, 01:02 PM

So then I will need the 312mmx25 TT rotor or is it like all the other 986 carries and I'll need the D2 A8 312x25mm rotor?The second one

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HUFset

01-11-2018, 09:51 AM

I’m confused about what is true.
Will the USRT Carrier for a MK1 TT/MK4 work on a B5 A4? vs. Will the OEM TT carrier work on B5 A4 with Boxster/986 calipers?

I’d rather buy the cheapest piece of metal or stick with what I have. I have A8 rotors, stock B5 A4 calipers and OEM MK1 TT carriers on my 2000 B5 A4.

The USRT are $160 w/ hardware[:D], PureMS is $175 w/ hardware and Apikol is $239 w/o hardware[headbang].
USRT Carrier link:
http://www.usrallyteam.com/index.php?main_page=product_info&cPath=188_267_194&products_id=1893

I'm confused between a few posts in this thread, I think the confusion lies in the OP(updates are below if true).

Below it’s stated that OEM TT carriers won’t work with Boxster calipers but USRT MK1 TT/MK4 will:

The tt caliper brackets work with factory calipers that came on you a4. It just puts them out so you can use a8 rotors.
Usrt sales a bracket for the 986 just get them for a mk1 TT about 160 shipped.
Again it is stated here that USRT TT/MK4 carriers work:

on the 986 bbk (312x25) you can use the usrt mk1 TT brackets/adapters too. I bring it up because they're about 100 bucks cheaper.
OP says OEM TT carriers and Boxster calipers work but also does not mention USRT carriers.

FRONT-
Boxster 986 BBK:
Boxster 986 Caliper Rt 986 351 422 03
Boxster 986 Caliper Lt 986 351 421 03
D2 A8 312mm x 25mm rotors 8E0 615 301 R
TT Carriers 1J0 615 125 A or Apikol/PureMS brackets
Requires new brake lines?Y

Perhaps the OP needs to replace this line:
TT Carriers 1J0 615 125 A or Apikol/PureMS brackets
with this?
USRT MK1 TT/MK4 brackets or Apikol/PureMS brackets

rockbeau25

04-14-2018, 08:29 PM

B7 S4 300mm:
B5 S4 Caliper Rt 8D0 615 424 C
B5 S4 Caliper Lt 8D0 615 423 C
or
B6/B7 S4 Caliper Rt 8E0 615 424 C
B6/B7 S4 Caliper Lt 8E0 615 423 C -->grifrowl's B6/B7 S4 caliper D.I.Y<-- (http://www.audizine.com/forum/showthread.php/654216-My-junkyard-b5-brakes)
B7 S4 300mm x 22mm rotors 8E0 615 601R
Apikol/034 brackets
Requires new brake lines?Y
Confirmed fitment-Centric (Stoptech branded) 950.33005 brake lines

Are Apikol/034 brackets needed only for the B6/7 caliper or are they needed with the B5 caliper as well?

Mattr567

04-23-2018, 11:01 AM

I’m confused about what is true.
Will the USRT Carrier for a MK1 TT/MK4 work on a B5 A4? vs. Will the OEM TT carrier work on B5 A4 with Boxster/986 calipers?

I’d rather buy the cheapest piece of metal or stick with what I have. I have A8 rotors, stock B5 A4 calipers and OEM MK1 TT carriers on my 2000 B5 A4.

The USRT are $160 w/ hardware[:D], PureMS is $175 w/ hardware and Apikol is $239 w/o hardware[headbang].
USRT Carrier link:
http://www.usrallyteam.com/index.php?main_page=product_info&cPath=188_267_194&products_id=1893

I'm confused between a few posts in this thread, I think the confusion lies in the OP(updates are below if true).

Below it’s stated that OEM TT carriers won’t work with Boxster calipers but USRT MK1 TT/MK4 will:

Again it is stated here that USRT TT/MK4 carriers work:

OP says OEM TT carriers and Boxster calipers work but also does not mention USRT carriers.

Perhaps the OP needs to replace this line:
TT Carriers 1J0 615 125 A or Apikol/PureMS brackets
with this?
USRT MK1 TT/MK4 brackets or Apikol/PureMS brackets
I'm doing this and I'm confused also.

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demonmk2

04-24-2018, 09:28 AM

the OEM TT carriers work with the stock caliper that comes on the a4 and allows you to use the A8 312mm rotor.
if you want to use 986 bembo calipers you can use the adapter bracket ( for the MK1 TT for the same caliper 986) and will fit the a4 uprights and still using the A8 312mm rotor

Also with S4 uprights you can swap the entire front brake setup from a B6 S4 345mm or am I missing something. its another cheap upgrade over stock.

rockbeau25

05-23-2018, 12:18 PM

There has been a few threads lately in regardes to brake upgrades, so I figure I will try to compile a list of both front and rear upgrades so we have everything in one place for ease of future reference.

This list is incomplete as of now, I DO NOT know what is required to run ALL of these setups on both pre-facelift and facelift cars. With the help of the rest of you guys, I hope to complete this list. If anyone has anything to add(part #'s, tips/tricks, other notable setups, etc.), post it and I will edit it into the 1st and 2nd posts.

FRONT-

D2 A8 BBK:
B5 A4 Calipers
D2 A8 312mm x 25mm rotors 8E0 615 301 R
TT Carriers 1J0 615 125 A
Requires new brake lines?N

Boxster 986 BBK:
Boxster 986 Caliper Rt 986 351 422 03
Boxster 986 Caliper Lt 986 351 421 03
D2 A8 312mm x 25mm rotors 8E0 615 301 R
TT Carriers 1J0 615 125 A or Apikol/PureMS brackets
Requires new brake lines?Y

Boxster S BBK:
Boxster S Caliper Rt 996 351 426 11
Boxster S Caliper Lt 996 351 425 11
D2 A8 312mm x 25mm rotors 8E0 615 301 R
or
B5 S4 321mm x 30mm rotors 8E0 615 301 AD
Apikol/PureMS brackets
Requires new brake lines?Y

Porsche 993TT BBK:
993TT Caliper Rt 993 351 426 10
993TT Caliper Lt 993 351 425 10
B5 S4 321mm x 30mm rotors 8E0 615 301 AD
or
Apikol 323mm x 32mm 2-piece floating rotors
or
Mercedes Benz C230 330mm x 28mm rotors 203 421 13 12 *(machine center hub a few mm, and drill lug bolt holes to 14mm) (with corresponding brackets)
or
Volvo V70R/S60R 306 452 22 330mm x 32mm *(open lug holes with a 3/4" bit, and minimal grinding to uprights) (with corresponding brackets)
Apikol/2Bennett brackets
Requires new brake lines?Y
•Notes• A.K.A. Porsche Brembo Big Red/Black found on both 993s and 928GTSs

If you choose to swap to B5 S4 uprights instead of running the brackets. . .

17z 330mm BBK:
17z Caliper Rt Porsche 955 351 422 33/Touareg 7L6 615 124 H/Audi Q7 7L6 615 149
17z Caliper Lt Porsche 955 351 421 32/Touareg 7L6 615 123 T/Audi Q7 7L6 615 150
Mercedes Benz C230 330mm x 28mm rotors 203 421 13 12 *(machine center hub a few mm, drill lug bolt holes to 14mm, and need 2mm Apikol shim or steel washers)
or
Volvo V70R/S60R 306 452 22 330mm x 32mm *(open lug holes with a 3/4" bit, and minimal grinding to uprights)
Apikol 2-piece 330x32mm rotors
Apikol brackets
Requires new brake lines?Y
Confirmed fitment-Centric (Stoptech branded) 950.33005 brake lines

17z 345mm BBK:
17z Caliper Rt???
17z Caliper Lt???
rotors???
Apikol brackets
Requires new brake lines?Y
Confirmed fitment-Centric (Stoptech branded) 950.33005 brake lines

18z BBK:
18z Caliper Rt 7L6 615 150
18z Caliper Lt 7L6 615 149
17z brake pads
Mercedes Benz C32 AMG 345mm x 30mm rotors 203 421 09 12
Apikol brackets
Requires new brake lines?Y
Confirmed fitment-Centric (Stoptech branded) 950.33005 brake lines

B6/B7/B8 345mm BBK:
*Requires B5 S4 upright conversion*
B8 S4 Caliper Rt 8K0 615 124 G
B8 S4 Caliper Lt 8K0 615 123 G
B6/B7 S4 345mm x 30mm rotors 8E0 615 301 T
B8 S4 Carrier Rt 8T0 615 126
B8 S4 Carrier Lt 8T0 615 125
Requires new brake lines?Y/N?

Just adding my recent BBK which is similar to, but not the same as anything on this list.

D2 S8 4 pot Brembos
*I did this with a B6 upright conversion but I believe it could be done without*
D2 S8 Caliper Lt 4D0615107D
D2 S8 Caliper Rt 4D0615108D
B6/B7 S4 345mm x 30mm rotors 8E0 615 301 T
D2 S8 Pads (apparently some D2 S8s came with HP2s, careful to order Brembo pads)
Apikol 993TT brackets (I used B6 to 993tt brackets, may be possible to use B5 A4 to 993tt brackets as well)
Requires new brake lines?Y
StopTech 950.33005 (B7 RS4 lines)

The calipers are similar to 993TT calipers with some slight variations (IIRC they share a part number). As far as mounting goes, they are the same. However, the D2 S8 version can support a larger 345x30mm B6/7 rotor.

demonmk2

06-17-2018, 12:28 PM

Has any one wired in a b5 S4 abs sensor into a prefacelift a4 for the brake upgrade when using the uprights?

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rockbeau25

06-21-2018, 12:44 PM

Has any one wired in a b5 S4 abs sensor into a prefacelift a4 for the brake upgrade when using the uprights?

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Are you talking about the bolt down style ABS sensors? When I did the B6 upright conversion I used this (4B0927803B). It is bolt down but use the pre-facelift style connector. I simply snipped off the brake pad sensors since our cars don't have that. Only issue I ran into is you need to put a washer between the sensor and the upright so it doesn't interfere with the axle.

Joe Jr.

09-27-2018, 10:16 AM

this is a good source of information. you know what would help this thread? photos of the various set ups either finished or in parts. i know i'm asking a lot but after all the replies here and no one has posted pics? just saying....

chris164935

01-19-2019, 01:33 PM

Anyone know if 332 rotors will work with the Touareg 17z calipers? That size seems to be the easiest (and cheapest) to find in a 2 piece rotor setup.

Bordom

01-21-2019, 06:19 PM

Anyone know if 332 rotors will work with the Touareg 17z calipers? That size seems to be the easiest (and cheapest) to find in a 2 piece rotor setup.332 what? Porsche?

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A1 A2 German

01-21-2019, 06:50 PM

chris164935

01-22-2019, 12:24 PM

332 what? Porsche?

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Sorry, 332mm size rotors.

Jam'sAudiFix

01-22-2019, 03:51 PM

Jam'sAudiFix

01-22-2019, 03:52 PM

A1 A2 German

01-22-2019, 05:03 PM

Check it, found it:

Good stuff

https://voshmods.com/collections/frontpage

Creechy

01-25-2019, 03:57 AM

The part number for the Frontrack rear hub upgrade is 4A0501653C. You can then upgrade to FL S4 calipers and disc's but you'll need a 10 to 12mm spacer spacer between the carrier and mounting tabs. Another problem with the S4 calipers is you have to mount them upside down due to the parking brake cable on the frontrack mounting from the top.( Bled the caliper off the disc with a windback tool against the piston.)
I've been running S4 calipers with Rs4 carriers with 310mm tts disc's for 2 years ( 345mm S4 fronts ) with exellent results.

voshmag

01-27-2019, 09:20 AM

Mattr567

01-27-2019, 04:28 PM

Fronttrak rear conversion specs needed, along with aftermarket big brake options, guy making those plates.

(sparing AZ another random post and compiled it in one master thread).

1) Saw an AZ'r who ditched the odd ball rear, bearing/hub/spacer/disk all in one.....in favor of a true hub with a bearing in it, and individual disk that slipped on that mirrored the front brakes. Maybe off a C5 A6?

2) Saw a new member who had a mini website selling front and rear ~cnc milled brackets for bbk upgrades. Granted he may know and will ask him, I still need to find him.

His kits appeared to be all quattro, so I'd have a double whammy and having to convert to ~mutiple hub, then use his conversion bolted to that to convert to bbk.

The hub your thinking of its off a C4 100 fwd. B5 fwd and C4 100 fwd share stub axles so thats why it works. I have a set i'll be installing soon. Pretty common at my local junkyard actually. The bearing kits are also the same too apparently, but I would pick the C4 version just to be safe. That plate may work with the C4 hubs, but considering the brake balance (especially on fwd) I dont see the point really besides looks.

https://i.imgur.com/wCAz1iH.jpg
https://i.imgur.com/9Vj5Pqm.jpg

B5 Fwd bearing kit:

https://www.blauparts.com/rear-audi-a4-wheel-bearing-kit-1997.html

C4 100 fwd bearing kit:

https://www.blauparts.com/rear-audi-100-wheel-bearing-kit-2wd.html#vehicle_fitment

The part number for the Frontrack rear hub upgrade is 4A0501653C. You can then upgrade to FL S4 calipers and disc's but you'll need a 10 to 12mm spacer spacer between the carrier and mounting tabs. Another problem with the S4 calipers is you have to mount them upside down due to the parking brake cable on the frontrack mounting from the top.( Bled the caliper off the disc with a windback tool against the piston.)
I've been running S4 calipers with Rs4 carriers with 310mm tts disc's for 2 years ( 345mm S4 fronts ) with excellent results.

Yep, thanks for posting in my build thread btw. I'm actually picking up D2/S8 carriers so I can run 280mm rotors. RS4 stuff here is rare and expensive. D2 A8/C5 4.2 carrier is also an option, 269mm rotor. All 3 setups (B5 S4/C5 2.7T, D2 A8/C5 4.2, D2 S8) all share the same caliper and pads, its all just down to the carrier [:d]

Could we have some in-depth pics of your rear setup? Would really appreciate it.

A1 A2 German

01-27-2019, 04:29 PM

Voshmag, I was going to reach out to you once running, as have to focus on that more then anything. I'm AP Racing up front, for obvious reasons couldn't do a Frankenstein AP Racing meets Brembo meets Wilwood....I'd look into another front AP Racing kit, for the rear, using your Wilwood parking brake (attempting to buff, erase, de-badge the Wilwoods and all colormatched)

All things considered AP Racing kits are simply looking for front oem pick up points (front upright pick up points). The AP Racing kit fit via a B5 adapter bracket, as I see it anyone should be able to use any front B5 orientated blend considering you used front oem spacing/pick up points.

So it would be your full kit minus the Brembos

Mattr567

01-27-2019, 05:00 PM

Would also like to add that wheel spacers listed as compatible with the B5 Passat and C4 100 fwd will work on A4 FWD's. I have 10mm H&R's on mine.

Voshmag, I was going to reach out to you once running, as have to focus on that more then anything. I'm AP Racing up front, for obvious reasons couldn't do a Frankenstein AP Racing meets Brembo meets Wilwood....I'd look into another front AP Racing kit, for the rear, using your Wilwood parking brake (attempting to buff, erase, de-badge the Wilwoods and all colormatched)

All things considered AP Racing kits are simply looking for front oem pick up points (front upright pick up points). The AP Racing kit fit via a B5 adapter bracket, as I see it anyone should be able to use any front B5 orientated blend considering you used front oem spacing/pick up points.

So it would be your full kit minus the Brembos

Whats exactly wrong with mixing AP Racing and Brembo? Lol. Unless we could change the brake bias, I don't see how a super big rear setup would help us much. Lot less weight back there too than Quattro. I have AP Racing CP6600 4pot fronts on B5/S4 rotors, so the D2/S8 rear BBK should wrap things up nicely. Plenty big and the rotor is vented.

I hate that wack fwd integrated rotor thing [evilmad]

A1 A2 German

01-27-2019, 05:17 PM

Mattr567

01-27-2019, 09:06 PM

Thanks for the info.

It's not that I "have too" place an front AP Racing kit in the rear (that oversized), it's that maybe my only option....unless I start looking into maybe other platforms...aka don't believe there was a rear A4 B5 Quattro AP Racing to tinker with. S4 perhaps

Yet...if there's the kit then it erodes the need for this kit as is the kit for adding large rear brakes in addition to adding the C4 gear

The Brembo Touraeg caliper should work fine ¯\_(ツ)_/¯ Found this but its over twice what I paid for my front BBK: https://www.ebay.com/itm/AP-Racing-Rear-Brake-Kit-BBK-2piston-Black-304x26-J-Hook-S4-B5-00-02-/202287831737?_trksid=p2385738.m4383.l4275.c10

Either way the C4 hub would be needed to run any rear fwd BBK. Idk how the caliper spacing has exactly changed vs Quattro since S4 calipers are bolt on for them, but I have a feeling ill need to do a lot of tinkering to get everything right for the S8 setup.

Mattr567

02-04-2019, 02:29 PM

Another problem with the S4 calipers is you have to mount them upside down due to the parking brake cable on the frontrack mounting from the top. (Bled the caliper off the disc with a windback tool against the piston.)

Had another thought about this. I was looking at both rear calipers and the parking brake assemblies appear to be almost the same design, just flipped around like stated in bold. BUT the thing is they appear to mount the same. So, in theory, you could just bolt the FWD parking brake assembly onto the S4 caliper? That way you can avoid this problem entirely.

A4 FWD Left
https://c1552172.ssl.cf0.rackcdn.com/795414_x800.webp

S4 Left
https://c1552172.ssl.cf0.rackcdn.com/387962_x800.webp

D2 for shits and giggles, completely diffrent parking brake system
https://c1552172.ssl.cf0.rackcdn.com/645473_x800.webp

Creechy

02-06-2019, 02:37 AM

I think the arm for the parking brake would then need to be swapped side for side along with the mechanism so that it's pulled in the correct direction.
Far easier would be to mount the caliper the same way up as the Quattro and re-route the parking brake cable from below, should just need a bracket to hold the cable in place. I might revisit this at some point.
I'll post some pic's next time I've got the wheel off.

SaintPaulyBoy

06-06-2019, 04:44 PM

Dont the ATE G60's with 320mm x 25mm discs plus A6 carriers also work for front?

anyone ????

Pdaniel8

10-05-2019, 01:11 PM

One question about 288 to 312 upgrade with TT carriers. Do I keep the same 288mm pads, or do I have to use different pads for the 312mm setup?

Mattr567

10-05-2019, 09:30 PM

One question about 288 to 312 upgrade with TT carriers. Do I keep the same 288mm pads, or do I have to use different pads for the 312mm setup?

Same pads, same caliper. The advantage (IIRC) is the bigger rotor allows heat to be dispersed easier/faster so less fade over time/hard use.

Pdaniel8

10-06-2019, 01:09 AM

Same pads, same caliper. The advantage (IIRC) is the bigger rotor allows heat to be dispersed easier/faster so less fade over time/hard use.

..[up][up][up][up]

Blazius

10-06-2019, 12:58 PM

Same pads, same caliper. The advantage (IIRC) is the bigger rotor allows heat to be dispersed easier/faster so less fade over time/hard use.

well along with more contact surface on the 312mm rotor, and the pads are obviously 312mm too

8N0 698 151 312

4B0 698 151 AB 288

Pdaniel8

10-09-2019, 03:07 PM

well along with more contact surface on the 312mm rotor, and the pads are obviously 312mm too

8N0 698 151 312

4B0 698 151 AB 288

Thanks.

About the 269mm rear upgrade ventilated ...

Its really something I'm interested. "C5 A6 calipers work, too (so you can get calipers and carriers from the same car, which helps a lot)". I like this.

Carriers: 4D0615425B
Calipers Rt: 4B0615424
Calipers Lt: 4B0615423

About brake lines, no problem with that.

Question is: Still A8 Rotors? Or A6 C5: 4Z7 615 601

The only diference is:
A8 rotor 4D0 615 601B height: 46,4mm
A6 rotor 4Z7 615 601 height: 48,0mm

D2 A8 269mm:
B5 S4 Caliper Rt 8D0 615 424 C
B5 S4 Caliper Lt 8D0 615 423 C
D2 A8 rotors 4D0 615 601B
D2 A8 Carriers 4D0 615 425 B
D2 A8 rotors 269mm *(2mm washer in between the bracket and the upright)
Requires new brake lines?N
•Notes• "Should be stated that C5 A6 calipers work, too (so you can get calipers and carriers from the same car, which helps a lot), the only downside being that it requires a different brake line due to the C5 using a banjo bolt at the caliper."-walky_talky20

Pdaniel8

10-17-2019, 12:52 AM

well along with more contact surface on the 312mm rotor, and the pads are obviously 312mm too

8N0 698 151 312

4B0 698 151 AB 288

Both are the same size.

https://www.onlinecarparts.co.uk/oenumber/8n0698151.html

https://www.onlinecarparts.co.uk/oenumber/4b0698151ab.html

Blazius

10-17-2019, 09:43 AM

Both are the same size.

https://www.onlinecarparts.co.uk/oenumber/8n0698151.html

https://www.onlinecarparts.co.uk/oenumber/4b0698151ab.html

intresting via OEM part number states they aint.

Cybersombosis

03-24-2020, 09:22 AM

Hi everyone. I have an opportunity to get the front brakes from a B6 S4 being parted out. What would I need off the S4 in order to make it work with my 2001.5 A4 B5 1.8T? Would I need to buy anything else or can I take everything I need off of the S4? Can I use the upright from a B6 S4? A lot of the posts say to use the B5 S4 uprights but I haven't seen a post saying you could use the B6 S4 uprights. There is a lot of info in this thread and I don't want to miss anything. A detailed list of what I need would be much appreciated. Thanks everyone.

Doug

Bordom

03-24-2020, 09:56 AM

Cybersombosis

03-24-2020, 10:25 AM

Can I use the control arm of the donor car?

Doug

LegendaryT2

03-24-2020, 10:28 AM

If it's straight I think u xan

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Bordom

03-24-2020, 10:28 AM

Can I use the control arm of the donor car?

DougNo. The strut bushing is too thin.

You can if you use washers, but that's just ghetto

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Cybersombosis

03-24-2020, 10:35 AM

Can I press in the bushing from the control arm I am taking out? I am getting the setup for free in exchange for parting out the car at my place. The owner lives in an apartment and doesn’t have space. So if I can do it for free, I will.

Doug

Bordom

03-24-2020, 10:54 AM

You could.

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A1 A2 German

07-02-2020, 06:19 PM

Mattr567

07-02-2020, 06:52 PM

If any fwd's with a C4 hub swap are willing to work with Vogmash. Idk, maybe he could send half a kit via a refundable deposit with return slip for someone to dry test fit a side. You wouldn't even have to crack open your hydraulic system, just talking a dry mount (I suggest having a hand full of ~1/2" washers to use as shims).

Also looks like C4 purchasing source's have dried up unless looking to drop big coin on a pair.

I actually talked to him about this a while ago but couldn't justify the price. He offered a deep discount on a kit to let me be a guinea pig. I was just gonna do a 280mm D2 S8 rear with a GLI caliper since it almost lines up (beam axle mk4 to beam axle B5). The voshmod on fwd seemed overkill for my purposes.

I got my hubs from a pnp fwd C4, seen quite a few of them actually here in SoCal yards. Haven't installed any of it yet though...

Creechy

07-03-2020, 10:38 AM

Another option for FWD rear brake upgrade would be the B6/7 rear carriers and the early fwd Phaeton calipers (not sure you got the fwd phaeton in America ). This would keep the calipers the correct way up.

Blazius

07-03-2020, 11:57 AM

I find the fwd rear brake kinda ... waste of money, the 245 mm is good enough, just slap a decent brake at front and it should fine, there is basically no weight back there.

Creechy

07-03-2020, 02:16 PM

B7 S4 fronts and standard rears never felt good, to much dive. Changed the rears to B5 S4 calipers with Rs4 carriers and 310mm discs, now brakes very balanced and stable.

A1 A2 German

07-03-2020, 08:04 PM

Anyone comes across junkyard C4's on the cheap grab'm for me.

Mattr567

07-07-2020, 10:06 PM

Anyone comes across junkyard C4's on the cheap grab'm for me.

One thing I did find at the yard that might fit our needs is the rear calipers off a Fiat 500 Abarth. They look identical to Mk4 GLI calipers (even the same paint) but the line is a bit different. Most importantly however the handbrake arms line up with our cable as it also routes above the beam axle (while Mk4 GLI doesn't as it routes the cable under the beam axle so it pulls from the bottom).

https://i.imgur.com/RZgwdSG.jpg
https://i.imgur.com/7Kca7mG.jpg
https://i.imgur.com/Td40Yj1.jpg
https://i.imgur.com/cvLnFgs.jpg
https://i.imgur.com/zUV6fgF.jpg

I may try to reroute my handbrake cable around the bottom of the beam like Mk4 to avoiding needing to lengthen the stock line (mk4 gli and B5 fwd share the same banjo) because swapping the calipers left to right etc to make the GLI arms line up to pull from the top would put the line bolt location on the GLI caliper facing the opposite direction, so it needs more length to reach around the top of the caliper.

Blazius

10-13-2020, 05:43 AM

Recently found that there is another BBK path. WILL bolt on without upright swap apparently confirmed by one user:

I can't post in this thread, but those calipers are straight bolt on to the older strut. They can be found on mk1 TT v6 and Golf 4 r32. Calipers are the same as b5 rs4 and some mercedeses and bmw's, carriers have to come from golf or tt to bolt up. Like you said, bigger wheels are needed. it's 19 cm or 7,48 inches from the middle of the cv shaft to the furthest point of the carrier.

I haven't actually run them on my car as i have 16 inch wheels, but i have tried them on. I have B6 s4 front discs for them which need to be turned down about 2 mm in radius to fit. And then you also need 1 or 2 mm spacers between the carrier and the strut.

The only negative is that they are super heavy as they are made of steel not some aluminum compound.

3.2 L Audi TT brakes from 2003-2006 ish

334x32 mm rotors.
2 piston caliper - 41mm ish piston dia.

2640.5 mm2 piston surface area

It has short mounting hole distance (94mm for B5 steel spindles) which means it should bolt straight to steel B5 spindles but its unknown. 17 inch wheels are required.

P/N's:

8N0615123A - caliper left
8N0615124A - caliper right
8N0615125A - carrier left
8N0615126A - carrier right

8N0615301B - Rotor left 334x32
8N0615302B - Rotor right

ATTENTION: These rotors are 5x100. You need to redrill them or use MB rotor 1294212112 , which has correct pcd of 5x112, same thickness and diameter.

brake pads: 8N0698151D

Brake line change ? - unknown possibly I have to guess, the thread is the same as many others M10x1. Stock part number is 8N0611707B. Does not need banjo.

pictures (s3 8L):

Rotor vs 312mm

https://a.d-cd.net/aCAAAgElieA-960.jpg

https://a.d-cd.net/TNAAAgBVieA-960.jpg

Migzvp

03-28-2021, 04:44 PM

Bordom

03-28-2021, 09:47 PM

Hi guys. I tried to read as much as I could but just wanna confirm some stuff. I have an 01 a4 and just picked up 18z calipers and rotors. First question is well these clear my winter wheels which are 17s. Also wanna confirm the part number for the apikol bracket since I wanna avoid swapping uprights

Sent from my SM-G998U using TapatalkDepends on which wheels you have. B5 S4 Avus wheels work with a large spacer iirc.

Allroad factory wheels are 17" and will clear 18z without issue. Wheel weight placement is also going to be a big issue.

I have no experience with Apikol so I couldn't tell you.

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Migzvp

03-29-2021, 06:26 AM

Depends on which wheels you have. B5 S4 Avus wheels work with a large spacer iirc.

Allroad factory wheels are 17" and will clear 18z without issue. Wheel weight placement is also going to be a big issue.

I have no experience with Apikol so I couldn't tell you.

Sent from my SM-G9600 using TapatalkThese are the wheels I have nowhttps://uploads.tapatalk-cdn.com/20210329/004c505b5a35d0d28a37dfb6e460ca13.jpg

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Bordom

03-29-2021, 07:20 AM

These are the wheels I have nowhttps://uploads.tapatalk-cdn.com/20210329/004c505b5a35d0d28a37dfb6e460ca13.jpg

Sent from my SM-G998U using TapatalkMore than likely will have to use spacers.

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Migzvp

03-29-2021, 07:22 AM

More than likely will have to use spacers.

Sent from my SM-G9600 using Audizine Forum mobile app (http://r.tapatalk.com/byo?rid=87676)Yea I figured that. Thanks

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fhopsk

10-20-2021, 10:45 AM

I ordered the kit from ecs tuning with the Audi TT front carriers and plain rotor set, but it also apparently comes with 4 2mm spacers/washers. Ive never seen any mention of using spacers when doing this upgrade? Don’t I simply install the tt carriers the same way as what is already on my b5?

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zatta

12-04-2021, 04:54 PM

Anybody know if B8 Q5 brakes are a direct fit? The OEM brembos with 345mm rotors.

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Bordom

12-09-2021, 12:26 PM

Anybody know if B8 Q5 brakes are a direct fit? The OEM brembos with 345mm rotors.

Sent from my iPhone using TapatalkB8 brakes will only fit with B5 S4/C5 A6 knuckles.

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zatta

12-09-2021, 12:50 PM

B8 brakes will only fit with B5 S4/C5 A6 knuckles.

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Sorry about my lack of knowledge but I’m assuming c5a6 knuckles bolt directly up to the B5 A4? And the B8 brakes are direct bolt on to c5a6 calipers?

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Bordom

12-09-2021, 01:02 PM

Sorry about my lack of knowledge but I’m assuming c5a6 knuckles bolt directly up to the B5 A4? And the B8 brakes are direct bolt on to c5a6 calipers?

Sent from my iPhone using TapatalkDepends on knuckle. There's specific requirements for B5/C5 steel/aluminum knuckles. One of which requires a different straight lower control arm.

The B5 S4 and C5 A6 share the same caliper mount ear spacing and wheel hub offset, which is also very similar to the newer B8 cars.

You cannot use A6 calipers with B8 rotors. I recommend you start doing more research on the differences with steel and aluminum B5/C5 knuckles and brake upgrade options.

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zatta

12-09-2021, 01:15 PM

Depends on knuckle. There's specific requirements for B5/C5 steel/aluminum knuckles. One of which requires a different straight lower control arm.

The B5 S4 and C5 A6 share the same caliper mount ear spacing and wheel hub offset, which is also very similar to the newer B8 cars.

You cannot use A6 calipers with B8 rotors. I recommend you start doing more research on the differences with steel and aluminum B5/C5 knuckles and brake upgrade options.

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Yeah just trying to figure out my options for budget BBK for my B5, and I meant to say B8 calipers bolting up to the knuckle not just the rotor. I have a C5A6 parts car which is mainly why I’m curious.

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trep13

03-17-2023, 04:56 PM

I was on 17" celebration on s4 b7 brakes (on my b6)

I want same or better, but clear the Celebration again on the b5

17z are the ones..?
Or i can get better for the buck?

I really want them clear 17

And true, its perfect flush fit on these Celebration!! Haha

True.

I would like to mention that 17z's clear 17" Celebration wheels though. It is very tight, but they clear.

A1 A2 German

08-12-2023, 02:40 PM

Voshmod 300mm 330mm rear Big Baller brake kit onto Audi A4 B5 Fronttrack Front Track Front-Trak:

By an odd set of circumstances the kit fits....

Stripped down spindle flange, you can see the abs speed hall sensor top middle:
https://i.imgur.com/RsSTf49.jpeg

In the Voshmod mod bracket you will make a small relief to clear the abs hall sensor (30 seconds with grinder) and the magic happens that by sheer accident that you do not install it infront of the spindle flange like normal, yet behind it. Dust sheilds from Audi C4 are cut down to size to clear the 17z's and e-brake caliper. It helps to install the Voshmod bracket front side first, to see everything, line everything up then move to the back. This looks busy yet majority of this is all stock hardware, less that little fabbed up bracket bottom left I talk about below.
https://i.imgur.com/swI6F4d.jpeg

Fronttrak spindle flanges are smaller than Quattro...so when you go to bolt the caliper side of the Voshmod bracket to the spindle flange there's nothing there to mount to so made these simple brackets that tie the spindle flange to the Voshmod bracket. Again, kinda easier to make this little bracket once up front, then when you bolt the Voshmod bracket in rear, just add spacers.
https://i.imgur.com/jAWpeLp.jpeg

Throw away the large oem rear all in one hub assembly and slide on Audi C4 hubs that look like this, which allow you to run normal rotors. Shout out to Mattr567 for shipping me a set!
https://i.imgur.com/sQimYnA.jpeg

By sheer accident of placing the Voshmod bracket behind, the 17z calipers requires no spacers of the Brembo 17z's, now to be fair the rotor is not dead centered within the Brembo caliper but still works out...if you shimmed the caliper outwards to center the rotor you'd end up needing decent sized wheel spacers to clear the calipers as you'd have to space the calipers outwards into the spokes. This works by sheer accident again as Brembo 17z's allow a huge amount of forgiveness to run the rotors far to the right or left of dead center...most rotors give 0mm's to play with:
https://i.imgur.com/7Hlq0Gl.jpeg

I did have to space out the e-brake calipers with longer bolts and ~40mm spacers, off the Voshmod bracket to get everything to line up, you can kind see the long spacers as no longer bolts directly to the Voshmod ears:
https://i.imgur.com/D9uIPSm.jpeg
https://i.imgur.com/hxhB9Ql.jpeg
https://i.imgur.com/RBbC0XI.jpeg

The only modifications you do are pretty easy, get the donor Audi C4 hubs (just slides on), make a small dimple clearance grind cut on the Voshmod bracket to clear the abs hall sensor that sticks out of the spindle flange (seen in pic #1), make some kind of small bracket to help secure the caliper side of the Voshmod bracket to the oem spindle flange (pic #2 & #3) and space out the e-brake caliper ~38-40mm away from the Voshmod bracket. I did end up using 5mm spacers to clear the 17z Brembos, to be clear even up front I had to do that with a straight forward setup...remember clearance can simply just be spoke design so if I had different wheels I may not need 5mm wheel spacers.

clapincd

10-04-2023, 12:57 AM

I just purchased a set of 18z front calipers that I plan on rebuilding and installing on my B5 A4 Avant along with the 330x328mm AMG rotors and creation motor sport brackets. I currently run 17" wheels on my setup and was wondering if anyone else had done the 18z upgrade with that wheel size.

GoFundMyGas

01-29-2025, 10:49 PM

Get uprights. Then order 00 straight control arm. Do not get the 01-01.5 arms as the balljoint is fatter.

EDIT: 00 S4 control arms. Not A4

Sent from my SM-G9600 using Tapatalk

Hey, upgrading my original caliper pushed out with 312mm discs with the help of TT carriers, to an aluminium upright set up with 18z. I just wanted to make sure that with a 2001 aluminium upright, I am supposed to get a pre-2001 lower front control arm. Would that be TRW JTC343 (https://www.fcpeuro.com/products/audi-vw-control-arm-front-lower-front-oem-4d0407151pt) or JTC980 (https://www.fcpeuro.com/products/vw-audi-suspension-control-arm-front-lower-forward-vag-4b3407151k)?

and will the C5 4.2 17in Fat Fives (https://www.google.com/imgres?q=c5%20a6%204.2%20fat%20fives&imgurl=https%3A%2F%2Fwww.audiforums.com%2Fforum%2F attachments%2Fb5-models-69%2F27273d1501210426-wide-fives-fat-fives-sliver-b5-img_4620.jpg&imgrefurl=https%3A%2F%2Fwww.audiforums.com%2Fforum %2Fwheels-tires-74%2F01-a6-4-2-fat-fives-sale-750%2524%2524%2524-148519%2F&docid=q7rcioxflVhvNM&tbnid=3wWHJP-q8-9VZM&vet=12ahUKEwjjsIup7JyLAxXjD1kFHUEqK0UQM3oECBcQAA.. i&w=1023&h=682&hcb=2&ved=2ahUKEwjjsIup7JyLAxXjD1kFHUEqK0UQM3oECBcQAA) clear the callipers

walky_talky20

03-19-2025, 03:05 PM

Aluminum uprights need the "small" tapered ball joint size. Steel uprights use the "big" taper.
There are also 2 different widths of the center bushing (where the shock fork bolts to the control arm). B5, C5 and D2 use the "wide" size, B6/B7 use the "narrow" size.

There are basically 3 different control arms:
Small Taper/Wide Bushing - 4B3-407-151 C or E or K, AKA: JTC980 - Fits Early 2000 B5 S4, D2 A8/S8, Late C5 A6, B5.5 Passat
Small Taper/Narrow Bushing - 8E0-407-151 M or R, AKA: JTC936 - Fits B6 and B7 A4/S4/RS4

Big Taper/Wide Bushing - 4D0-407-151 H or P, AKA: JTC343 - Fits All the Steel Upright cars: All B5 A4, B5.0 Passat, Early D2 A8, Early C5, Late 2000+ B5 S4.
Big Taper/Narrow Bushing - These don't exist. I almost made these once to run used B6 front coilovers on a B5 with Steel uprights.

If you want to run aluminum uprights, you need "Small Taper". If you want to run front shocks made for a B5 chassis, that's "wide bushing". So you would need JTC980.