4M Q7 / B9 RS5 6 Piston + 380mm SQ5 Rotor.

[peterpark0]

I think I'm the first in the states to do this. I seen this combo somewhere out on drive2.ru but no but there was no information. So with a bunch of research everything "should" work with a 12mm-ish spacer. This is just about accurate, but I would suggest using a 14-15mm spacer instead.

Special shout out to UkuRiSh, H4mm3R2, UltraSchnell34 for contributing and being crazy enough to attempt this too!
H4mm3R2 - Some crazy genius! Russian dude I think? He was the first ones to talk about the B9 S4/S5 caliper with the 356x34mm rotor. And does work with the massive 400mm SQ7 caliper too!
UkuRiSh - Created his own bracket to use the factory 4M Q7 / B9 RS5 375x36mm rotor.
UltraSchnell34 - Using the MB 375x36mm rotor. (Very affordable and accessible rotor!)

Procedure

This is the exact same concept of the B9 S4/S5 Caliper + 356mm C7 A6/A7 setup. There's lots of useful information on this thread, so read this first before asking questions. (All the real good information is on the last few pages!)
https://www.audizine.com/forum/showt...or-use-on-B8-s

No mess brake line change & Bleeding
- Hold down the brake pedal. (Have someone or place an object(Snow brush) to push the brake pedal)
- Pop open the bleeder valve and suck out some of the fluid with your brake bleeder tool of choice. Or just let it drip out.
- Disconnect the top line and there should be little or no fluid that comes out.
- Do for both sides obliviously!
- Release the brake pedal.
- Bleed your brakes.
- Start the engine and pump the brake pedal a few times, This allows the brake pistons to fill up and move. Turn off engine.
- CHECK FOR LEAKS!
- Tap the caliper and bleed the brakes again.
- Pump your brakes before driving and bed in your brakes. Rebleed if needed.

I like to use the Capri Tools Vacuum Brake Bleeder, it's super simple and easy to use.
https://www.amazon.com/Capri-Tools-V...dp/B00OM751EC/

Btw, I used the 4M Q7 line and it's a direct fit!



Parts list

4M Q7 / B9 RS5 6 Piston Akebono and Pads
Caliper from the 375mm setup

SQ5 Rotor 380x36mm
4H0615301AN
29lbs/each

Spacer between Adapter and Caliper
14-15mm high
I may have this in production to sell soon.
The B9 S4/S5 setup uses a 12.7mm spacer (1/2in), this is a little taller.



M12x1.25 95mm bolt
I used 100mm bolt. You can use washers or cut down the bolt down to 95mm.
If the bolts are too long it will interfere with the knuckle.
I have a bunch of these bolts (Uncut, 100mm) and custom aluminum washers for sale, Contact me!




Optional parts list
ECS RS5 SS brake line
Rotor mounting bolt x2
Brake shield bolts x8
VW/Audi Brake fluid


Results

3 Days in...
Everyone complains about a mushy/delayed brake feel. I don't have that issue with this. It feels the same as the stock S5 brakes, there may be a slight change in pedal fee where you have to push the pedal in harder, l but I think that's in my head. The car stops hard on factory pads!
Brake bias is fine. On my BMW BBK, you could really feel the nose-dive from the front end. On the s5 it stays planted front and rear, unless you really really hard stop.

[peterpark0]

20" RS5 Rotors (20x9 +25)






19" S5 Speedline 3430 (19x9 +33)

[supachaged]

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[AKO]

Any issues with the brake line going into the caliper? I know guys have said the fitting on the end is different.

[A.C.]

Sub’d x2


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[UltraSchnell34]

Great write-up and it looks beautiful!

[peterpark0]

Any issues with the brake line going into the caliper? I know guys have said the fitting on the end is different.

There shouldn't be a problem with B8 brake lines fittings going into the Akebono calipers. The fittings thread should be the same.

Look at this guy with the 350mm Akebono with B8 SS line. But I think the B8 RS5 SS line would be better, plus the RS5 is threaded/twist-able on the caliper end.

[UltraSchnell34]

I may have a lead on a Stoptech set that i test fitted today with the 90 degree like the RS5. I'm pretty sure it the same length as well.

I'll try and post some pictures and part numbers tomorrow before i leave town.


Did you end up getting them powder coated? I'm trying to find a piston rebuild kit since the dealer wants a crazy amount.

[peterpark0]

I may have a lead on a Stoptech set that i test fitted today with the 90 degree like the RS5. I'm pretty sure it the same length as well.

I'll try and post some pictures and part numbers tomorrow before i leave town.


Did you end up getting them powder coated? I'm trying to find a piston rebuild kit since the dealer wants a crazy amount.

I didn't want to disassemble the caliper, with a chance of damaging the seal. Since my calipers were new-ish. So I just ended up painting it with VHT Gloss black engine enamel and clear coat.
I'll do a powder coat and replace the seals in another 20k miles.

Pics

Grinded down the casting marks and sanded down the whole caliper wtih 60 grit. Orange cleaner/degreaser + Dawn dish soap bath to clean.



Taped off the inside & bleeders.





Stickers added with another layer of Clear.





Not too bad for a rattle can job!

[whiped]

I'm having Oleg make me a set of his brackets so I can use the 375x36mm rotors as they will fit under a few 18" wheels.

I test fitted with my existing 380x36mm setup off the SQ5 a few months ago.



From what I could tell you would need to grind down the bracket a bit to have it all bolt up cleanly.

[peterpark0]

I'm having Oleg make me a set of his brackets so I can use the 375x36mm rotors as they will fit under a few 18" wheels.

I test fitted with my existing 380x36mm setup off the SQ5 a few months ago.

From what I could tell you would need to grind down the bracket a bit to have it all bolt up cleanly.

Nice nice, Is that the non-aluminum version of the rotor? & I want a copy of his bracket too! Those 375mm loooks so much better!

And yes there was some grinding involved, Just like the B9 S4/5 setup.

[UltraSchnell34]

Good stuff!!

Here are a couple picture of the B7 RS4 stainless steel lines. https://www.achtuning.com/stoptech-9...s-audi-b7-rs4/

We had a set laying around at the shop so i had the chance to test fit them.
20190412_095942.jpg20190412_095920.jpg

[UltraSchnell34]

Time to give this tread an update bump!

20190506_222433.jpg
20190612_172736.jpg
20190612_185745.jpg

Test fitting some wheel options
IMG_20190617_144158.jpg

Finished up and getting clean
20190613_123555.jpg

So after testing fitting this setup originally with Mercedes GL550 Rotors I learned that unfortunately the rotor bore is 1mm smaller that the S4 hub and that the hat is 2mm too short which unfortunately causes contact with the inner edge(where the pads mount) of the caliper... because of this i went with the SQ5 rotor which fit perfectly! I also test fit a new Q7 Rotor which had a similar problem with the hat being to short.

So after having these bad boys on for a couple weeks I've gotta say they feel great!

List of parts used:
Audi 4M Q7 front calipers and brake pads
B8.5 SQ5 front rotors 380mm
Hareward kit purchased from Peterpark0
RS4 Stoptech SS brake lines
B8.5 front brake pad sensor

Thank you Peterpark0 for putting a lot of this together and for the hardware kit! It worked great!

[peterpark0]

So after testing fitting this setup originally with Mercedes GL550 Rotors I learned that unfortunately the rotor bore is 1mm smaller that the S4 hub and that the hat is 2mm too short which unfortunately causes contact with the inner edge(where the pads mount) of the caliper... because of this i went with the SQ5 rotor which fit perfectly! I also test fit a new Q7 Rotor which had a similar problem with the hat being to short.

So after having these bad boys on for a couple weeks I've gotta say they feel great!

List of parts used:
Audi 4M Q7 front calipers and brake pads
B8.5 SQ5 front rotors 380mm
Hareward kit purchased from Peterpark0
RS4 Stoptech SS brake lines
B8.5 front brake pad sensor

Thank you Peterpark0 for putting a lot of this together and for the hardware kit! It worked great!

So the 19" Peelers fit! These brakes actually look better on these wheels vs the RS5 20" rotors.

& The color really makes these calipers pop! HOLY SHIT that looks good!

So now do you have a bunch of spare rotors laying around? lol.

[UltraSchnell34]

He he he kinda.... well thankfully i work at a shop and was able to return and test fit a lot of stuff without paying for it... lol but yea i have my set of spacers and bolts from trying the run the MB rotors.

I like the yellow but i'm honestly really disappointed in the VHT Yellow caliper paint. I cleaned, prep, and primered the calipers and they started chipping before i ever got them installed. I'm not sure how many times i had to repaint these
Anyway i may repaint them before this big event we have going on in 3 weeks, it will just depend on how good or bad they look the week of.

Side note while ordering new wheels i had to look into a brake template to make sure of clearance and they are very very similar to the Stoptech ST-60 kit template. I'll verify the clearance with the new wheels but i had a few sets to test fit(Vorsteiner and BBS) and didn't have any issues.

[UltraSchnell34]

Here is the clearance from the inside of the wheel. I also made a rookie mistake and didn't put in the top pad spreader clips the first night... which is why the back looks like shit(part of the other reason i'm thinking about repainting them)
20190621_172359.jpg

Random pic from work
20190613_143200.jpg

[whiped]

I've had mine on for a few weeks now. I just ran a bunch of washers to space it out as I am still waiting on a bracket from Oleg.

I painted mine black because I am boring and basic. They look good alongside the 4-pot rears though

[AKO]

Saw your car at Leavenworth. They did look massive in person! I need a set.

[whiped]

Saw your car at Leavenworth. They did look massive in person! I need a set.

You can find them pretty cheap off Ebay if you wanted to piece together a kit.

I'm hoping to swap down to the 375x36mm rotors and run a set of 18" wheels.

I still need to test fit my winter wheels. I am like 60% certain they will fit...

[UltraSchnell34]

My new wheels should be here next week. When I swap over I'll see if we have any 18s I can use for testing.

I've looked everywhere but I can't find a set of 375 rotors that will still fit without a lot of modifications.

[whiped]

Vosh shared that you can use the CTS-V 375x36mm rotors and just redrill them to 5x112.

I'll be using the Q7/RS5 rotors with a bracket to adjust for the hat offset.

[UltraSchnell34]

Another option that just remembered is that all the new BMWs are switching to 5x112 bolt pattern but i havent done much research into there hat and rotor sizes.

[peterpark0]

You can find them pretty cheap off Ebay if you wanted to piece together a kit.

I'm hoping to swap down to the 375x36mm rotors and run a set of 18" wheels.

I still need to test fit my winter wheels. I am like 60% certain they will fit...

If you look at the F80 M3/4. The factory 18in(513m) cleared the 380mm brembos due to the barrel design.

On my 335, I had 370mm brembos and it cleared that same wheel (513m) but my factory 18's didn't.

So good luck! It's just trail and error at this point!

I've had mine on for a few weeks now. I just ran a bunch of washers to space it out as I am still waiting on a bracket from Oleg.

I painted mine black because I am boring and basic. They look good alongside the 4-pot rears though

Sorry dude, I was meaning to get back to you. But I couldn't get any of the spacers made.

What's the status on UkuRiSh's bracket?

[whiped]

Sorry dude, I was meaning to get back to you. But I couldn't get any of the spacers made.

What's the status on UkuRiSh's bracket?

No worries man, it would have been a tight timeframe regardless.

Designs are done, just waiting for them to be CNC'ed. If you want more details you can ask Oleg directly.

[blackfunk]

While I'm not in the market for a BBK I am curious as to whats the weight on this package.

[UltraSchnell34]

While I'm not in the market for a BBK I am curious as to whats the weight on this package.

To quote Peterpark0 from a different thread:
"Weights from my bathroom scale:
29.6lbs Rotor
11lbs Caliper
13lbs Calipers with pads"

You can find them pretty cheap off Ebay if you wanted to piece together a kit.

I'm hoping to swap down to the 375x36mm rotors and run a set of 18" wheels.

I still need to test fit my winter wheels. I am like 60% certain they will fit...

Depending on the wheels I'm sure, but i did test fit a set of 18's just now and they would fit however the set i had at the shop was from a B7 S4 so the hub wasn't the same but it did clear the barrel

[Kittrell]

Schnell, if you ever feel the need to upgrade a bit...

[UltraSchnell34]

Schnell, if you ever feel the need to upgrade a bit...

Oh my... those are sexy.

I'd love to upgrade when it's time but I also need someone to make some performance pads.

Random update: I did get the chance to track the car. Nothing crazy about 10 laps but everything went perfectly!

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[peterpark0]

Updating with photos of this setup clearing 19s Speedline 3430 wheels. See post #2

[UltraSchnell34]

Updating with photos of this setup clearing 19s Speedline 3430 wheels. See post #2

Looking good!

I thought I'd add some photos from last month's rally event.

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[AKO]

Is there anyway of running the B9 S4 caliper without grinding the aluminum uprights?

[Solarsuplex]

Is there anyway of running the B9 S4 caliper without grinding the aluminum uprights?

Just grind it you pussy!

[AKO]

Just grind it you pussy!

Come over and ill watch you grind it bb

[Solarsuplex]

Come over and ill watch you grind it bb

I think one of us owes the other a beer anyway!

[AKO]

I think one of us owes the other a beer anyway!

Hey time and date. I am there!

[JBravo]

Anyone have an approximate cost of this setup?

[UltraSchnell34]

I dont think there is an approximate price. There is to many variables.

My setup cost me $800 all in but depending on where you source things and if you want to paint them yourself or powder coat them.

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[JBravo]

I dont think there is an approximate price. There is to many variables.

My setup cost me $800 all in but depending on where you source things and if you want to paint them yourself or powder coat them.

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Understandable. Thank you, that sounds perfect. Think this is the road I will travel for upgrading brakes.

[bhvrdr]

I have a set of new red rs5 calipers. I bought them and mounted them and they wouldnt clear my track wheels so just took them off. Let me know if looking to buy

[supachaged]

I have a set of new red rs5 calipers. I bought them and mounted them and they wouldnt clear my track wheels so just took them off. Let me know if looking to buy

Pm sent


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