Toyota 86 Big Brake Kit Upgrade / TTSPORT Classic 5440
The Toyota 86 earns its reputation on the strength of its chassis balance and manual-shift feel — it's a car built for aggressive cornering and repeated hard stops. The problem is the factory brakes weren't built for that kind of abuse lap after lap. This case study covers a straightforward fix: a forged four-piston caliper, a larger heat-treated rotor, and stainless lines, all fitted behind the car's 17-inch wheels.
The owner wanted a setup that matched the car's steering feel — precise, predictable, and confidence-inspiring at the limit. That meant moving past the stock caliper and rotor to something with more rigidity and more thermal mass.
Vehicle & Kit Specs
| Item | Specification |
|---|---|
| Vehicle | Toyota 86, 17-inch wheels |
| Front caliper | TTSPORT AP9440 forged four-piston caliper (Classic Series, model 5440) |
| Front rotor | TTSPORT 330 x 28mm high-carbon heat-treated curved-vane rotor |
| Brake lines | TTSPORT stainless steel brake lines |
Below is the full technical 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
A forged two-piece aluminum caliper body flexes less under load than the stock cast unit, so more of the pedal effort goes into clamping force instead of getting absorbed by the caliper itself — that's what gives the pedal a firmer, more consistent feel.
- Larger 330 x 28mm heat-treated rotor adds thermal mass, helping resist fade during repeated hard braking.
- Star-profile racing pistons without dust boots run cooler at the seal, reducing heat soak into the brake fluid.
- The 5440's spec sheet lists a 17-inch minimum wheel fit, matching this car's factory wheel size with no spacers required.
- Stainless steel lines resist the swelling that rubber lines develop under sustained pressure, keeping pedal travel consistent lap after lap.
Installation Gallery
Frequently Asked Questions
What wheel size does this Toyota 86 big brake kit fit?
What's included in the kit installed on this Toyota 86?
Is the TTSPORT 5440 caliper a one-piece or two-piece design?
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.