Zeekr 001 Big Brake Kit Upgrade / TTSPORT Evolution EB10 & EP4S
The Zeekr 001 pairs serious EV torque with a chassis capable of being driven hard — but its factory brakes, like most OEM systems, are calibrated for daily commuting rather than repeated hard stops. Owners pushing the car closer to its limits were running into a familiar problem: a pedal that goes soft and stopping power that fades as the factory calipers and rotors heat up. This case documents a front-and-rear upgrade to TTSPORT's Evolution series to close that gap.
Heavier EV curb weight and instant torque both load the brakes harder than a comparable gas car under the same driving. A bigger caliper and rotor package gives the system more clamping force and more thermal mass to work with, which is the basic reason this owner went looking for a front-and-rear upgrade rather than just a pad or fluid change.
Vehicle & Kit Specs
The full kit went on a Zeekr 001 running 21-inch wheels: a front TTSPORT EB10 ten-piston caliper on a 420mm high-carbon rotor, and a rear TTSPORT EP4S electromechanical caliper on a 380mm high-carbon rotor, along with a vehicle-specific caliper bracket, TTSPORT performance pads, stainless brake lines, brake fluid, and mounting hardware.
| Item | Specification |
|---|---|
| Vehicle | Zeekr 001, 21-inch wheels |
| Front caliper | TTSPORT EB10 forged 10-piston caliper |
| Front rotor | TTSPORT 420mm high-carbon rotor |
| Rear caliper | TTSPORT EP4S electromechanical caliper (4-piston service brake + integrated EPB actuator) |
| Rear rotor | TTSPORT 380mm high-carbon rotor |
| Bracket | Custom vehicle-specific caliper bracket |
| Pads / lines | TTSPORT performance pads, stainless brake lines |
| Hardware | Brake fluid, mounting bolts and fasteners |
Below are the official TTSPORT spec sheets for the two calipers used in this build.
| Brake Caliper | |
|---|---|
| Series | Evolution Series |
| Model / Application | EB10 |
| Axle Position | Front |
| Piston Count | 10-piston |
| Piston Type | Two-piece heat-insulated pistons with dust boots |
| Piston Diameter | 28 mm × 4 / 30 mm × 6 |
| Caliper Dimensions | L 415 mm × W 168 mm × H 129 mm |
| Total Piston Area | 67.0 cm² per caliper, all pistons combined |
| Manufacturing Process | Two-piece forged aluminum body |
| Net Weight | 7.50 kg per caliper, without pads |
| Surface Finish | High-temperature gloss coating |
| Recommended Wheel Size | 20 in or larger |
| Recommended Rotor Size | Ø420–440 mm × 40 mm |
| Fitment & Installation | |
| Minimum Spoke Clearance (mm) | 108 (inner-rotor-to-inner-spoke distance) |
| Caliper Mounting Type | Radial mount with vehicle-specific caliper bracket |
| Brake Line Fitting Type | OEM-style chassis-side fitting |
| Brake Caliper | |
|---|---|
| Series | Evolution Series |
| Model / Application | EP4S |
| Axle Position | Rear |
| Piston Count | 4 hydraulic pistons + 1 for EPB actuator |
| Piston Type | 2-piece heat-insulated pistons with dust boots + EPB actuator |
| Piston Diameter | 28 mm × 4 / 27 mm × 1 |
| Caliper Dimensions | L 278 mm × W 202 mm × H 93 mm |
| Total Piston Area | 30.4 cm² per caliper, all pistons combined |
| Manufacturing Process | Two-piece forged aluminum body |
| Net Weight | 4.50 kg per caliper, without pads |
| Surface Finish | High-temperature gloss coating |
| Recommended Wheel Size | 18 in or larger |
| Recommended Rotor Size | Ø345–380 mm × 28 mm |
| Fitment & Installation | |
| Minimum Spoke Clearance (mm) | 97 |
| 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 |
Why It Works
- The EB10's forged two-piece body and through-caliper reinforcing ribs cut flex that shows up as a soft, mushy pedal in a stock caliper design — TTSPORT states the ribbed structure adds 20-30% stiffness over a conventional layout.
- Symmetric piston layout on both the EB10 and EP4S puts even clamping force across the pad face, so the pedal builds bite predictably from a light tap to a full stop instead of feeling inconsistent under hard braking.
- Moving up to 420mm front / 380mm rear rotors adds thermal mass versus the factory discs, which is the direct fix for the fade this Zeekr 001 owner was chasing after repeated hard stops.
- The two-piece heat-insulated pistons and high-temp dust boots and seals are built to run with carbon-ceramic rotors, keeping fluid temperatures and seal life in check under sustained heat load.
- The EP4S keeps the Zeekr 001's electric parking brake fully functional — its four service-brake pistons handle everyday braking while a fifth, dedicated actuator drives the parking brake, so nothing about the car's normal EPB operation is lost in the swap.
Installation Gallery
FAQ
What wheel size does this Zeekr 001 kit fit?
Does the rear caliper still work with the Zeekr 001's electronic parking brake?
What rotor sizes come with this kit?
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.