Audi A4 Big Brake Kit Upgrade / TTSPORT Classic 8705
The Audi A4 has a reputation for being the "quiet" Audi — boxy, understated, easy to mistake for any other model in the lineup. But under the hood, a lot of these cars carry real power, and the factory brakes weren't built with a modified A4 in mind. This owner wanted a pedal and a stopping distance that matched the rest of the build, so the fix was a TTSPORT TT8705 big monoblock six-piston brake kit up front.
The upgrade swaps the stock caliper and rotor for a TT8705 monoblock six-piston caliper paired with a 355x32mm high-carbon heat-treated curved-vane rotor and TTSPORT stainless steel brake lines — all fitted behind the car's factory 18-inch wheels.
Vehicle & Kit Specs
| Item | Specification |
|---|---|
| Vehicle | Audi A4, 18-inch wheels |
| Front caliper | TTSPORT TT8705 monoblock (one-piece cast) six-piston caliper |
| Front rotor | 355 x 32mm high-carbon heat-treated curved-vane rotor |
| Lines | TTSPORT stainless steel brake lines |
Why It Works
The TT8705 caliper is cast as a single one-piece body instead of being bolted together in two halves, which cuts down on the caliper flexing under hard braking. Less flex means the pad meets the rotor more consistently, so the pedal feels firmer and more predictable instead of going soft when you lean on it.
- Staggered large/small piston layout inside the caliper helps apply more even pressure across the pad, promoting more linear pedal feel and more even pad wear.
- The 355x32mm rotor's curved-vane, hollow-slot design pulls friction dust away from the pad surface and channels heat out of the rotor faster, which is the mechanism behind reducing fade on repeated hard stops.
- This kit was installed and confirmed to clear the car's factory 18-inch wheels.
Installation Gallery
FAQ
What does the TTSPORT TT8705 big brake kit for the Audi A4 include?
Does the TT8705 kit fit behind the Audi A4's stock wheels?
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.