BMW Z4 (G29) Upgraded with TTSPORT Classic 7640 Big Brake Kit
Picture this: Top down, perfect road, you dive into a corner... and the brake pedal feels... mushy. The BMW Z4 is a pure, engaging roadster, but its biggest letdown from the factory is the braking system. Those stock single-piston floating calipers are the same ones you'd find on a base-model economy sedan. They are vague, they fade quickly, and they kill your confidence.
You can't have a high-performance sports car with low-performance brakes. The direct fix is the TTSPORT 7640 6-Piston Big Brake Kit. This upgrade is designed to give your Z4 the sharp, confident, and fade-free stopping power that its chassis deserves.
The Bolt-On Upgrade for 19" Wheels
This is a complete front-axle solution. We sized the system perfectly for 19-inch wheels, ensuring the large 6-piston caliper fills the wheel barrel for that aggressive, purposeful motorsport look.
- Vehicle Platform: BMW Z4 (E89 / G29)
- Wheel Requirement: 19-inch Wheels
- Front Caliper: TTSPORT 7640 Six-Piston Forged Caliper
- Front Rotor: TTSPORT 380mm (15.0") High-Carbon 2-Piece Rotor
- The Kit: Includes vehicle-specific brackets, high-performance pads, and stainless steel lines.
The Engineering: From "Mushy" to Milliseconds
The difference in feel isn't magic; it's engineering. The 7640 caliper is designed to be the cure for the stock system's flaws:
1. Rock-Solid Pedal Feel
Stock calipers "float" on pins, which introduces flex. The 7640 is forged for incredible rigidity. This eliminates caliper flex—the #1 cause of that "mushy" pedal feel. The result is immediate feedback the moment you touch the pedal.
2. Linear, Progressive Power
We arrange the six pistons in a progressive size order (38mm / 32mm / 27mm). This gives you a smooth, linear pedal for easy street driving, but massive, controllable stopping power when you stand on it for a hairpin turn.
3. Superior Heat Management
Vented cooling pistons, high-temp seals, and the large 380mm (15.0") 2-piece rotors create a massive heat sink. This system is built to handle aggressive canyon carving or light track days without fading.
BMW Z4 Upgrade FAQ
1. Will these squeal with the top down?
We know that brake noise is a deal-breaker for convertible owners. We ship this kit with our Street-Performance Ceramic Pads, which are formulated to be low-noise and low-dust, ensuring your open-air drive remains peaceful until you decide to attack the corners.
2. Does this add weight to the car?
Actually, despite being much larger, the system is surprisingly light. The 7640 caliper is forged aluminum (lighter than cast iron), and the 2-piece rotors feature aluminum hats. You gain massive performance with minimal penalty to unsprung weight.
3. Will this fit my factory wheels?
This kit uses 380mm rotors and is designed for 19-inch wheels. If your Z4 is equipped with factory 18-inch wheels, this kit will likely not clear the barrel. Please verify your wheel size and use our fitment template before ordering.
Get the Brakes Your Roadster Deserves
Stop compromising. Unleash the true performance of your Z4 with the sharp, confident braking it should have had from the start.