VOYAH FREE Big Brake Kit Upgrade / TTSPORT Classic 8657
16 Jul 2026
Vehicle Configuration and Parts List
| Item | Confirmed specification |
|---|---|
| Vehicle | VOYAH FREE performance electric SUV |
| Vehicle weight context | Approximately 2.3 tons |
| Wheel size | 20 inches |
| Upgrade scope | Front and rear service-brake upgrade with a separate rear electronic parking-brake caliper |
| Front caliper | TTSPORT TT8657 two-piece forged aluminum six-piston caliper, approximately 3.90 kg each |
| Front street hardware | Piston dust boots and anti-rattle clips |
| Front rotor | 380 × 34 mm high-carbon, heat-treated curved-vane rotor |
| Rear caliper | TTSPORT TT8901 four-piston performance caliper |
| Rear rotor | 380 × 28 mm high-carbon, heat-treated curved-vane rotor |
| Parking brake | Separate EPB caliper in a rear dual-caliper setup |
| Brake lines | TTSPORT stainless steel brake lines |
Wheel-fitment warning: A 20-inch wheel diameter does not guarantee clearance. The wheel barrel, spoke profile, offset, and caliper position must be checked before ordering.
Why This Brake Setup Works
| TTSPORT feature | Why it matters on this vehicle | What you notice |
|---|---|---|
| TT8657 six-piston front calipers | The front axle carries a large share of the braking load when a nearly 2.3-ton SUV decelerates hard. | More controlled pressure delivery and easier pedal modulation during firm braking. |
| 380 × 34 mm front rotors | The larger high-carbon, heat-treated curved-vane rotors provide more material and airflow for managing repeated heat. | Braking response is less likely to change as rotor temperature rises during repeated stops or long descents. |
| TT8901 four-piston rear calipers with 380 × 28 mm rotors | Upgrading the rear service brakes supports a more complete front-to-rear system instead of concentrating the entire upgrade on the front axle. | A more even and predictable braking response across both axles. |
| Separate rear EPB caliper | The performance caliper can handle service braking while the dedicated EPB caliper preserves the vehicle's electronic parking-brake function. | Four-wheel performance braking without giving up normal parking-brake operation. |
| Two-piece forged aluminum TT8657 body | The design provides a six-piston front caliper while keeping each caliper at approximately 3.90 kg. | A substantial front brake package without unnecessary caliper mass. |
| Dust boots and anti-rattle clips | Street-driven vehicles need protection from road contamination and hardware designed to control pad movement. | A setup better suited to regular road use than a stripped-down race-only configuration. |
| TTSPORT stainless steel brake lines | Reducing hose expansion helps transmit hydraulic pressure more directly when the pedal is pressed. | A firmer, clearer pedal response under higher braking pressure. |
What gets better
- Greater rotor heat capacity for repeated high-load braking.
- Six-piston front and four-piston rear calipers for more controlled pressure distribution.
- More consistent front-to-rear braking response.
- Clearer hydraulic feedback from stainless steel brake lines.
- Electronic parking-brake operation retained through a separate EPB caliper.
- Street-use hardware included on the TT8657 front calipers.
What to confirm first
- Exact VOYAH FREE model year and powertrain version.
- Wheel barrel diameter, spoke profile, offset, and caliper clearance.
- Preferred pad compound for daily noise, dust, and temperature requirements.
- Correct caliper centering, rotor alignment, brake-line routing, and system bleeding.
- Proper pad and rotor bedding after installation.
- Local inspection and brake-modification requirements.
If you're not sure your 20-inch wheels clear the calipers, send the wheel specifications and vehicle details through our fitment request before ordering.
Build Gallery
VOYAH FREE Brake Kit FAQ
Does this VOYAH FREE brake kit upgrade both axles?
Yes. The build uses TTSPORT TT8657 six-piston front calipers with 380 × 34 mm rotors and TT8901 four-piston rear calipers with 380 × 28 mm rotors.
How does the upgrade retain the electronic parking brake?
The rear uses a dual-caliper setup. The TT8901 caliper handles service braking, while a separate EPB caliper retains the electronic parking-brake function.
Will this Big Brake Kit fit every 20-inch wheel?
No. This installation used 20-inch wheels, but clearance also depends on barrel diameter, spoke shape, wheel offset, and the exact wheel design.
What street-use features are included with the TT8657 caliper?
The two-piece forged aluminum TT8657 caliper weighs approximately 3.90 kg each and includes piston dust boots and anti-rattle clips for street use.
Does this brake upgrade guarantee a shorter stopping distance?
No fixed stopping-distance claim is made for this installation. Tire grip, road surface, temperature, pad compound, and ABS operation all affect measured braking distance.
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.