Audi A7 Big Brake Kit Upgrade / TTSPORT Classic 8703

Audi's A7 splits the difference between a mid-size executive sedan and a full luxury coupe, and depending on trim it's carrying anywhere from a 220-hp 2.8L V6 up to the S7's 500-hp 4.0T V8. Stock brakes on cars like this are tuned for daily comfort, not repeated hard stops, and once an owner starts driving the car the way it looks, the factory setup runs out of bite fast. This case covers an A7 owner who addressed that with the TTSPORT TT8703 six-piston big brake kit.

The upgrade centers on a TT8703 six-piston fixed caliper matched to a 380x34mm high-carbon heat-treated drilled rotor, along with TTSPORT's noise-free pad compound and stainless steel braided lines. The car in this build wears 19-inch wheels, which the kit was fitted to clear.

Vehicle & Kit Specs

Why It Works

• A fixed six-piston caliper clamps the rotor from both sides with a rigid body, cutting the flex you get from a single-piston sliding caliper — that's what turns a soft, long-travel pedal into a firmer, more predictable one.
• Stepping up to a 380x34mm rotor adds swept area and mass over the factory disc, giving the system more surface to generate friction and more material to absorb heat before fade sets in.
• The kit was installed and confirmed to fit behind the car's 19-inch wheels, so there's no need to change the factory wheel setup to run the bigger hardware.
• Stainless braided lines resist the swelling that rubber lines develop under heat, keeping pedal feel consistent as the brakes work harder, and the noise-free pad compound is aimed at quiet daily operation.

The kit ships as a complete axle set — six-piston calipers, rotors, pads, and lines — ready to bolt on without any additional machining or spacers.

Installation Gallery