DIY: B7 RS4 Front Brake Swap to B6/B7 S4 Full Write Up

[mad70sx]

I was able to get a full set from a totaled RS4 for $1150 shipped fronts and rears

Are the rear brakes on the RS4 different than on the S4? Floating rotor like the front?

[CHECKERED]

I did have one question though, with the brake lines, are the OEM RS4 ones stainless steel lines or just similar to S4 brake lines? Just curious, as to if there was a SS line upgrade option that could be done at the same time.

On the outside they look similar, rubber, but they are stiffer, some people say they are internally stainless steel braided, I will actually cut one open and see, I have stoptech stainless steel lines in the mail, so yes you can get true SS lines, which I recommend because they are cheaper than new OEM RS4 lines.

Are the rear brakes on the RS4 different than on the S4? Floating rotor like the front?

a write up for the rear RS4 brakes is coming soon (3-4 weeks I need extra parts). But to answer your question, the RS4 rear brakes are different, it’s a “semi floating rotor” ...I guess a hybrid between a true aluminum hat floating rotor and a traditional cast iron