Mazda3 Axela Big Brake Kit Upgrade / TTSPORT Evolution EB4
The Mazda3 Axela has always carried a bit of driver's-car DNA, tracing back to the old Familia lineage that shaped Mazda's handling reputation. This particular build leans into that heritage with a blackout JDM theme — blacked mesh grille, black front and rear aero, and an aggressive wheel setup — finished off with a TTSPORT Evolution EB4 four-piston front brake kit and a shot of red caliper color to match the attitude.
The car's exterior direction is deliberately restrained — no loud colors, just black-on-black bodywork and a set of aggressive wheels that hint at intent before you even hear the engine. The one accent color left on the table was the brake caliper, and that's exactly where the owner spent it.
Vehicle & Kit Specs
The front axle was upgraded with a complete TTSPORT Evolution EB4 four-piston kit sized for the car's 18-inch wheels — no spacers or wheel changes needed to fit the setup.
| Item | Specification |
|---|---|
| Vehicle | Mazda3 Axela, 18-inch wheels |
| Front caliper | TTSPORT EB4 forged four-piston caliper |
| Front rotor | TTSPORT 355mm slotted rotor |
| Bracket | Custom-fit, vehicle-specific caliper bracket |
| Pads / lines | TTSPORT high-performance pads, TTSPORT stainless steel brake lines |
| Hardware | Brake fluid, mounting bolts, and installation hardware |
Below is the official TTSPORT spec sheet for the EB4 caliper used on 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 |
The red EB4 caliper is the one splash of color against an otherwise all-black build, and it sits comfortably behind the factory-style 18-inch wheel with the vehicle-specific bracket doing the fitment work — no spacers, no wheel swap.
Why It Works
- A two-piece forged aluminum caliper body flexes less under load than a factory floating caliper, so pedal input translates into clamping force more directly — the "tighter" pedal feel the owner describes.
- Four pistons across two piston sizes (40mm and 44mm) spread clamping force more evenly across the pad, improving initial bite and reducing uneven pad wear.
- The larger 355mm rotor adds surface area and thermal mass compared to the stock disc, helping the system shed heat and resist fade under repeated braking.
- The kit is built around a custom-fit bracket sized for this platform's 18-inch wheels, so the caliper clears the wheel without spacers or offset changes.
Installation Gallery
FAQ
What wheel size does the TTSPORT EB4 kit need on a Mazda3 Axela?
What's included in the TTSPORT EB4 front brake kit for the Axela?
Is the EB4 caliper a two-piece design?
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.