Zeekr 007 GT Big Brake Kit Upgrade / TTSPORT Classic 7640
The Zeekr 007 GT is one of China's benchmark high-performance EV sedans — 475 horsepower combined output, a low center of gravity, and straight-line acceleration that can hang with traditional performance cars. But plenty of owners run into the same complaint: it accelerates like a race car and stops like a family sedan. This case study covers a Zeekr 007 GT owner who addressed that mismatch with a TTSPORT Classic Series 7640 six-piston big brake kit.
For a heavy, high-torque EV like the 007 GT, the stock brakes are asked to shed a lot of kinetic energy repeatedly without fading. The owner went with the TT7640 forged six-piston front kit as an accessible way to add braking capacity, heat resistance, and more consistent pedal feel — without an exotic price tag.
Vehicle & Kit Specs
| Item | Specification |
|---|---|
| Vehicle | Zeekr 007 GT, 19-inch wheels |
| Front caliper | TTSPORT Classic Series 7640 forged six-piston caliper |
| Front rotor | TTSPORT 380mm high-carbon alloy floating rotor |
| Bracket | Custom vehicle-specific caliper mounting bracket |
| Pads / lines | TTSPORT high-performance brake pads, stainless steel brake lines |
| Hardware | Brake fluid, mounting bolts and fixing hardware |
Here is the official TTSPORT spec sheet for the 7640 caliper used in this build:
| Brake Caliper | |
|---|---|
| Series | Classic Series |
| Model / Application | 7640 |
| Axle Position | Front |
| Piston Count | 6-piston |
| Piston Type | Two-piece heat-insulated pistons with dust boots |
| Piston Diameter | 27 mm × 2 / 33 mm × 2 / 38 mm × 2 |
| Caliper Dimensions | L 353 mm × W 162 mm × H 92 mm |
| Total Piston Area | 51.2 cm² per caliper, all pistons combined |
| Manufacturing Process | Two-piece forged aluminum body |
| Net Weight | 3.70 kg per caliper, without pads |
| Surface Finish | High-temperature gloss coating |
| Recommended Wheel Size | 18 in or larger |
| Recommended Rotor Size | Ø355–380 mm × 32 mm |
| Fitment & Installation | |
| Minimum Spoke Clearance (mm) | 98 |
| Caliper Mounting Type | Radial mount with vehicle-specific caliper brackets |
| Brake Line Fitting Type | Vehicle-specific fittings; caliper-side and chassis-side fittings vary by application |
The Classic Series is positioned as a popular entry point into performance brake upgrades. The 7640 is a mid-size six-piston caliper: forged construction with an engineered hollow-out design for a strong-but-light body, and a progressive six-piston layout that's meant to give a linear, controllable pedal feel rather than an on/off bite.
Why It Works
A forged, multi-piston fixed caliper flexes less under load than a stock sliding caliper, which is a big part of why the pedal firms up and feels more predictable. Combine that with a larger 380mm rotor — more mass and surface area to absorb and shed heat — and you get a system that's less likely to fade when the 007 GT's weight and torque are pushing hard into a stop.
- Fully forged aluminum caliper body — lightweight without sacrificing rigidity
- High-carbon alloy floating rotor for stronger heat and fade resistance
- Matched high-friction pads for stable, linear pedal feedback
- Low-drag piston retraction reduces residual drag, helping preserve range
Two-piece heat-insulated pistons and high-temp seals also help the caliper handle sustained heavy braking — a realistic scenario on a car with the 007 GT's power and curb weight — without the fluid and seals cooking under repeated stops.
Installation Gallery
Frequently Asked Questions
What brake kit was installed on this Zeekr 007 GT?
What wheel size does the TT7640 kit fit on the Zeekr 007 GT?
Is the TT7640 caliper suited to high-power EVs like the 007 GT?
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.