Need help identifying brake parts

[Azastoupil]

I recently purchased a B6 A4 with a lot of mods. After getting it on a lift to inspect the underside, I noticed that the brakes weren’t looking too good. They are Porsche Brembo calipers. The shop who built the car isn’t responding to my emails asking about them. I looked all over the caliper and rotor but didn’t find any numbers that went anywhere online. The calipers are 4 piston and the rotors are 2 piece with brake hats from ECS. There are adapters to make the calipers fit on the Audi and they have these numbers on them: 10200695 and 10174423. The rotors’ diameter is ~323mm and they are currently ~27mm thick. If anyone knows what they could be off of or where I could buy new rotors and pads(or let me know if I could just resurface the rotors as I have access to a brake lathe) it would be greatly appreciated. Pictures on a google doc https://docs.google.com/document/d/10jWvabPUXMoM0cbCMA-OgahSquXbWnawm_y56b2nWBM
This is my first post after being a “lurker” for a few years. I know I’m probably doing something wrong, but I really need help. Don’t be too hard on me (:

[GIACuser]

The 2 piece rotors are from ECSTuning.com You can probably go there and look through their catalog and find part and it will state what it is for. Putting these calipers on Audis and VWs is common upgrade. My guess is they bought the adapters there as well since you would normally buy them at the same time. That info should help you identify caliper. Since Porsche cars use Brembos it is a common to upgrade Audis and VW brakes with Porsche calipers. Most common are Porsche Boxster S, Porsche Cayenne 17z or 18z (I have the 18z set on my MKV GTI), however those calipers look slightly different to me so not sure what they are but with a little homework starting with ECS Tuning you should be able to solve the mystery.

Also those 2 piece rotors come apart and you only replace the rotor ring. I wouldn't turn those, especially seeing those stress cracks, those rotors are end of life.

[wkhanna]

I wouldn't turn those, especially seeing those stress cracks, those rotors are end of life.

+1