A4 B9 Big Brake Kits

[Knight16]

What's up gang?! Looking for suggestions on big brake kits for the A4 B9. i currently have mine at stage 2 & i know the rotors are going soon & i'd honestly would love to see some nice bright red calipers on my car . Wanted to see what people have done and what's working well. Thanks!

[krigstid]

Which rotor size do you have?

I have been looking for an upgrade for my A4 B9 front rotors also, they're 338mm with Conti Teves calipers, but havent been able to find any. The next size up is 350mm for the B9 S4, and I havent been able to find any carrier adapters for it.

[PartsByTopher]

The next size up is 350mm for the B9 S4, and I havent been able to find any carrier adapters for it.

The S4/S5 calipers are a direct bolt on for vehicles equipped with the 4-Piston front calipers. No carrier modifications required.

However, it does require new rotors, pads, shields, lines etc.. It’s a substantial upgrade over the stock 4 piston units though.


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[BrokenStud]

Im working on fitting 18z's from a wrecked Q7 into mine. They are easier to swap pads on for track day.

[Tineo]

The S4/S5 calipers are a direct bolt on for vehicles equipped with the 4-Piston front calipers. No carrier modifications required.

However, it does require new rotors, pads, shields, lines etc.. It’s a substantial upgrade over the stock 4 piston units though.


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Does this conversion require changing the master cylinder?

[PartsByTopher]

Does this conversion require changing the master cylinder?

It does not.


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[AudiSportDre]

Im working on fitting 18z's from a wrecked Q7 into mine. They are easier to swap pads on for track day.

Do you have a part number for that? And what else would be needed for that swap? Looking for different solutions outside of the S4 swap for that exact reason. Having to swap pads before and after track days is always such a pain


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[XLR8Performance]

If you're looking for an actual aftermarket option and not looking to do a conversion from another model. Alcon makes a big brake kit for the B9s. You can get it in a 355mm rotor or a 380mm rotor configuration depending on how big you wanted to go! They're not shiny red, but nothing that a powder coat can't fix. It'll come with literally everything for the install and it gives you different pad options depending on what compound you want for the kit. I've ran Alcon on a non-Audi and really enjoyed it

[///madgreek]

I swapped out b9 RS5 calipers and rotors on my b9 a4. They are a direct bolt on and are a MASSIVE improvement in stopping power. Look amazing also! 375mm rotors