Audi A3 Big Brake Kit Upgrade / TTSPORT Classic 9040
The Audi A3 has always punched above its price tag — a compact luxury car with real driving character. But the factory brakes are sized for daily commuting, not for a driver who wants the pedal to match the chassis. This build swaps in a TTSPORT front six-piston / rear four-piston setup, with an electronic parking caliper out back so the factory EPB function isn't lost in the process.
Up front, the stock single-piston floating caliper is replaced with a TTSPORT TT9040 six-piston caliper paired with a 355x32mm high-carbon, heat-treated drilled rotor. The larger rotor and multi-piston clamping force are aimed squarely at daily street driving — more consistent bite, more even pad contact, and a caliper that stays cool under repeated stops thanks to ventilated pistons.
Vehicle & Kit Specs
| Item | Specification |
|---|---|
| Vehicle | Audi A3, 18-inch factory wheels |
| Front caliper | TTSPORT TT9040 six-piston caliper with ventilated pistons |
| Front rotor | TTSPORT 355x32mm high-carbon, heat-treated drilled rotor |
| Rear caliper | TTSPORT TT6411 four-piston caliper |
| Rear parking brake | TTSPORT EPB electronic parking caliper (no OEM bracket machining) |
| Rear rotor | TTSPORT 345x28mm high-carbon, heat-treated drilled rotor |
| Lines | TTSPORT stainless steel brake lines |
Mounted up, the TT9040 caliper and 355mm rotor tuck behind the factory 18-inch wheel with no spacers and no clearance issues — the geometry was built around this wheel size, not forced to fit it.
Why It Works
- Six-piston front calipers spread clamping force across more pad area than the stock single-piston caliper, which means more even pedal feel and less taper wear over time.
- The 355x32mm front and 345x28mm rear rotors add mass and swept area over the factory discs, giving the system more thermal capacity for repeated hard stops.
- The rear EPB caliper is a universal design that bolts on without machining the factory caliper bracket, so the parking brake keeps working without cutting into OEM hardware.
Pairing the TT6411 four-piston rear caliper with the EPB electronic parking caliper covers both jobs — service braking and parking — without asking the shop to fabricate anything or trim the factory setup. It's a bolt-on solution built specifically for cars that still need to keep their electronic parking brake function intact.
Installation Gallery
Frequently Asked Questions
Does this TTSPORT big brake kit fit the Audi A3's factory 18-inch wheels?
Does the rear EPB caliper require modifying the factory caliper bracket?
What's included in this Audi A3 brake kit?
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.