Audi A4L Big Brake Kit Upgrade / TTSPORT Classic 8703
The Audi A4L is Audi's entry-level luxury sedan — composed styling, a well-equipped cabin, and a 2.0TFSI turbo four (155kW, 350Nm, 0-100km/h in 6.7 seconds) that gives it real legs. That kind of power deserves brakes that can match it, which is why this A4L owner swapped the stock setup for a TTSPORT TT8703 six-piston big brake kit.
The build runs on the A4L's factory 18-inch wheels, paired with a TT8703 cast six-piston caliper and a TT 355x32mm high-carbon heat-treated slotted rotor plus stainless steel brake lines — a full front-axle upgrade over the factory brakes.
Vehicle & Kit Specs
| Item | Specification |
|---|---|
| Vehicle | Audi A4L, 18-inch wheels |
| Front caliper | TTSPORT TT8703 cast monobloc six-piston caliper |
| Front rotor | TTSPORT 355x32mm high-carbon heat-treated slotted rotor |
| Lines | TTSPORT stainless steel brake lines |
Because the TT8703 caliper body is cast as one piece, the bridge connecting its two halves takes clamping loads better than a bolted two-piece caliper. That's the difference between a caliper that stays rigid under hard braking and one that flexes and softens pedal feel.
Why It Works
- One-piece cast construction resists caliper flex under load, translating into a firmer, more consistent brake pedal.
- The 355x32mm rotor adds mass and surface area over the stock disc, giving the system more thermal capacity to resist fade.
- Heat-treating the rotor at 600°C improves its strength and wear resistance, addressing the warping that high heat can cause during hard, repeated braking.
- The kit fits behind the A4L's factory 18-inch wheels, so there's no need for spacers or a wheel change.
Installation Gallery
FAQ
What wheel size does this TTSPORT kit fit on the Audi A4L?
What's included in the TT8703 kit used on this Audi A4L?
Why is a monobloc caliper better than the stock two-piece caliper?
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.