Toyota Reiz Big Brake Kit Upgrade / TTSPORT Classic 5440
The Toyota Reiz shares its chassis and rear-drive layout with the Toyota Crown, wrapped in sportier sheet metal and backed by a 2.0T or 2.5-liter V6. It's a car that already wants to be driven hard — so when this owner planned a brake upgrade, the goal was simple: give the chassis stopping power that matches its handling. The fix was a TTSPORT Classic 5440 four-piston big brake kit running behind the car's 18-inch wheels.
TT5440 four-piston calipers paired with 343mm rotors is a combination TTSPORT has fitted to plenty of Reiz builds — it's become something of a known-good match for this platform's 18-inch wheels.
Vehicle & Kit Specs
| Item | Specification |
|---|---|
| Vehicle | Toyota Reiz, 18-inch wheels |
| Front caliper | TTSPORT 5440, forged two-piece aluminum four-piston caliper |
| Front rotor | TTSPORT 343x28mm high-carbon heat-treated rotor, drilled and slotted |
| Bracket | Vehicle-specific radial-mount caliper bracket |
| Brake lines | TTSPORT stainless steel lines |
Below is TTSPORT's official spec sheet for the 5440 caliper used in this build.
| Brake Caliper | |
|---|---|
| Series | Classic Series |
| Model / Application | 5440 |
| Axle Position | Front |
| Piston Count | 4-piston |
| Piston Type | Star-profile racing pistons without dust boots |
| Piston Diameter | 38 mm × 2 / 41 mm × 2 |
| Caliper Dimensions | L 276 mm × W 138 mm × H 80 mm |
| Total Piston Area | 49.1 cm² per caliper, all pistons combined |
| Manufacturing Process | Two-piece forged aluminum body |
| Net Weight | 2.65 kg per caliper, without pads |
| Surface Finish | High-temperature gloss coating |
| Recommended Wheel Size | 17 in or larger |
| Recommended Rotor Size | Ø330–345 mm × 28 mm |
| Fitment & Installation | |
| Minimum Spoke Clearance (mm) | 86 |
| 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 343x28mm rotor's drilled face and internal vanes are there to move heat and gas out of the friction surface faster, which is what actually holds pedal feel together on repeated hard stops.
- The 5440's two-piece forged aluminum body is stiffer than a stock caliper casting, so clamping force goes into the pads instead of flexing the caliper.
- Stepping up to a 343x28mm rotor adds swept area and mass over the stock disc, giving the system more thermal capacity before fade sets in.
- The vehicle-specific radial-mount bracket keeps the whole package tucked cleanly inside the Reiz's 18-inch wheels — no oversized fitment guesswork.
- Stainless steel lines don't swell under pressure the way rubber lines can, which keeps pedal travel more consistent.
Installation Gallery
FAQ
What wheel size does the TTSPORT 5440 kit need on a Toyota Reiz?
What's included in this Toyota Reiz brake upgrade?
What rotor size pairs with the TT5440 caliper on this car?
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.