Toyota GT86 Big Brake Kit Upgrade / TTSPORT Mono EMB6/EMB4
16 Jul 2026
This build comes from TTSPORT's Malaysia distributor: a Toyota GT86 fitted with a front-six/rear-four forged monoblock big brake kit, sized to clear the car's stock 18-inch wheels without spacers.
The owner wanted more front-end bite and a firmer pedal for spirited driving, without giving up the factory wheel look. TTSPORT's EMB6 front / EMB4 rear combination swaps in forged monoblock calipers and larger rotors while staying inside the OEM wheel's spoke clearance.
Vehicle & Kit Specs
| Item | Specification |
|---|---|
| Vehicle | Toyota GT86, 18-inch wheels |
| Front caliper | TTSPORT EMB6 monoblock forged six-piston caliper |
| Front rotor | TTSPORT 355mm x 32mm high-carbon heat-treated slotted rotor |
| Rear caliper | TTSPORT EMB4 monoblock forged four-piston caliper |
| Rear rotor | TTSPORT 345mm x 28mm high-carbon heat-treated slotted rotor |
| Bracket | Custom vehicle-specific caliper brackets |
| Pads / lines | TTSPORT high-performance street pads, stainless steel brake lines |
| Hardware | Brake fluid, mounting bolts, and fixing hardware |
Below are the official spec sheets for the two calipers used in this build, front EMB6 and rear EMB4.
| Brake Caliper | |
|---|---|
| Series | Mono Series |
| Model / Application | EMB6 |
| Axle Position | Front |
| Piston Count | 6-piston |
| Piston Type | Two-piece heat-insulated pistons without dust boots |
| Piston Diameter | 30 mm × 2 / 34 mm × 2 / 38 mm × 2 |
| Caliper Dimensions | L 382 mm × W 160 mm × H 92 mm |
| Total Piston Area | 55.0 cm² per caliper, all pistons combined |
| Manufacturing Process | Monoblock forged aluminum body |
| Net Weight | 3.25 kg per caliper, without pads |
| Surface Finish | Nickel-plated |
| Recommended Wheel Size | 18 in or larger |
| Recommended Rotor Size | Ø355–405 mm × 32 mm-34 mm |
| Fitment & Installation | |
| Minimum Spoke Clearance (mm) | 101 |
| 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 |
| Brake Caliper | |
|---|---|
| Series | Mono Series |
| Model / Application | EMB4 |
| Axle Position | Rear |
| Piston Count | 4-piston |
| Piston Type | Two-piece heat-insulated pistons without dust boots |
| Piston Diameter | 30 mm × 4 |
| Caliper Dimensions | L 268 mm × W 164 mm × H 68 mm |
| Total Piston Area | 28.3 cm² per caliper, all pistons combined |
| Manufacturing Process | Monoblock forged aluminum body |
| Net Weight | 2.55 kg per caliper, without pads |
| Surface Finish | Nickel-plated |
| Recommended Wheel Size | 18 in or larger |
| Recommended Rotor Size | Ø345–380 mm × 28 mm |
| Fitment & Installation | |
| Minimum Spoke Clearance (mm) | 101 |
| 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
Front axle: EMB6 monoblock caliper
- The single-piece forged body is stiffer and lighter than a bolted two-piece caliper, so clamping force goes into the pads instead of flexing the housing — that's what turns a mushy pedal into a firm one.
- External two-piece heat-insulated pistons shed heat faster, giving a more progressive, controllable pedal feel and pairing well with high-carbon or ceramic rotors.
- Six pistons spread clamping load over a larger pad area, increasing torque at the rotor and sharpening response versus the factory caliper.
Rotor size on the front axle can be stepped up to 355, 380, or 405mm depending on the wheel diameter fitted.
Rear axle: EMB4 monoblock caliper
- Monoblock forging on the rear caliper adds structural strength for consistent bite under hard braking and high-speed conditions.
- A larger rear caliper raises the system's total braking capacity, helping the car scrub speed faster.
- The four-piston layout distributes clamping force evenly across the pad, keeping the car balanced and stable through a stop.
Rear rotor size can be matched to 345, 355, or 380mm depending on wheel fitment.
Installation Gallery
FAQ
What wheel size does this TTSPORT big brake kit fit on the Toyota GT86?
The kit was installed and photographed under the GT86's stock 18-inch wheels, with no spacers required.
What's included in the TTSPORT front-six/rear-four kit for the GT86?
The kit includes TTSPORT EMB6 forged monoblock six-piston front calipers, EMB4 forged monoblock four-piston rear calipers, 355x32mm front and 345x28mm rear high-carbon heat-treated rotors, vehicle-specific caliper brackets, TTSPORT performance street pads, stainless steel brake lines, and mounting hardware.
Are EMB6 and EMB4 calipers exclusive to the GT86?
No. Per TTSPORT, the EMB6 and EMB4 calipers are suited to mid-size to large sedans, SUVs, MPVs, and other high-performance vehicle upgrades, not just the GT86.
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.