034 300mm rear brake upgrade install review

[BastardS4]

I havent had a chance to drive it, but i thought i would comment on how the install went.

Essentially it consists of an adapter plate to move the carrier out into position to accept the 300X22mm B7 S4 rotors, and some new brake lines.

Initial quality: excellent. Lines are very well assembled, hardware is top notch, nothing extremely out of the ordinary here. Two issues i had with the hardware, was 1: doubling up the washers on the banjo bolts, i thought was kind of silly, perhaps a shorter depth banjo is not available? Second, IMPERIAL measurement hardware on an AUDI??!!? Mortifying... Luckily i dont have only metric tools thanks to my fleet of rusty fords.


Everything fits, and lines up as it should, with the exception of the lower adapter to carrier bolt. It did not clear the control arm extension of the steel upright. Took about five minutes to grind out a couple of mm so that it would clear and spin freely.

Ebrake cable also reached fine once i pulled the sleeve forward through the control arm guide. Its tight, but fine.

Brake lines are long enough, and i actually ziptied one side to the Ebrake cable as it was a little close the the wheel for my comfort.

The only minor annoyance is the fact that the pad only covers 3/4 of the available rotor surface, a necessary evil considering the budget of this setup.

...


No test drive yet, just reactivated the insurance this morning. :)

[johnkent1212]

Pics? Any updates of driving feel?

[BastardS4]

just did a break in run.

feels fine.

no hint of any unbalancing etc. Running a hawk HPS pad on front and back.

for me this was more of a cosmetic/upgrade mod for me. I never liked how small the back brakes are on any car. These are 4cm or so larger diametre and really fill the stock rims out nicely. And with my new RPF1s the back brakes no longer look so silly.


Runing my stock wheels for now as the front pads are spitting out a good amount of brake dust as they wear in.

[johnkent1212]

Any pics?

[BastardS4]

no pics sorry. maybe later

[JayyyyyC]

Nice. I'll look into doing this as well. Probably 50/50 for looks and performance but mainly because I would want the rears to balance out more after a BBK on the front.

[infinkc]

did you get all the parts form 034? i dont see a kit they sell for just the bracket and lines.

[BastardS4]

just call them up. they can put something together for you, their prices on the rotors are good too. little cheaper than i can get em locally, but not cheap enough to offset the added shipping.

I think its around 350 or so for a complete kit with rotors.

In the future id like to put on the full b7 caliper so i can get full sweep coverage of the rotor.

[Rated S]

I think its around 350 or so for a complete kit with rotors.

$350 for new brake lines, new modified carriers and new rotors?

Wow not bad at all.

The calipers would probably kill that price, though.