Lynk & Co 03 Big Brake Kit Upgrade / TTSPORT Evolution EB4
The Lynk & Co 03's reputation was built on the track — seven years, nine TCR championships — and that racing pedigree is a big reason owners keep pushing their cars past stock. This particular 03 picked up new 18-inch wheels and a TTSPORT Evolution EB4 four-piston big brake kit up front, closing the gap between how the car drives and how it stops.
Stock brakes handle daily driving fine, but the 03's eager throttle response makes the factory front calipers the weak link once you start driving it harder — mountain roads, spirited on-ramps, the occasional track day. A bigger, stiffer caliper and rotor combination closes that gap.
Vehicle & Kit Specs
The front-only kit pairs a TTSPORT EB4 forged four-piston caliper with a 355mm wave-edge rotor, using a custom bracket built specifically for the 03's front hub. It bolts on with a full set of TTSPORT pads, stainless lines, fluid, and mounting hardware.
| Item | Specification |
|---|---|
| Vehicle | Lynk & Co 03, 18-inch wheels |
| Front caliper | TTSPORT EB4 forged four-piston caliper |
| Front rotor | TTSPORT 355mm wave-edge (scalloped) rotor |
| Bracket | Vehicle-specific custom-fit caliper bracket |
| Pads / lines | TTSPORT high-performance pads, TTSPORT stainless steel brake lines |
| Hardware | Brake fluid, mounting bolts, and fitting hardware |
Below is the official TTSPORT EB4 spec sheet for the caliper used in this build.
| Brake Caliper | |
|---|---|
| Series | Evolution Series |
| Model / Application | EB4 |
| Axle Position | Front |
| Piston Count | 4-piston |
| Piston Type | Two-piece heat-insulated pistons with dust boots |
| Piston Diameter | 40 mm × 2 / 44 mm × 2 |
| Caliper Dimensions | L 289 mm × W 151 mm × H 83 mm |
| Total Piston Area | 55.5 cm² per caliper, all pistons combined |
| Manufacturing Process | Two-piece forged aluminum body |
| Net Weight | 3.80 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) | 99 |
| 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
EB4 is built as a two-piece forged aluminum caliper with an asymmetric, scientifically hollowed structure — TTSPORT designed it to shed weight without sacrificing even pressure distribution across all four pistons, so the front and rear pad edges bite with the same firm, immediate response.
- Through-caliper reinforcement ribs add roughly 20-30% more rigidity than a conventional caliper casting, cutting flex under hard braking.
- Two-piece heat-insulated pistons with dust boots and high-temp seals hold consistent bite as brake temperatures climb.
- The larger 355mm rotor adds thermal mass over the stock disc, giving the system more heat capacity before fade sets in.
- The kit is built to run behind 18-inch wheels, matching TTSPORT's stated minimum wheel size for the EB4 caliper and rotor combination.
Installation Gallery
Frequently Asked Questions
What TTSPORT kit was installed on this Lynk & Co 03?
What wheel size does the EB4 kit require on this car?
Why does the EB4 caliper improve pedal feel over the stock setup?
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.