GWM Tank 300 Big Brake Kit Upgrade / TTSPORT Direct-Mount OR6
Off-road trucks rarely struggle to get moving — the real test comes when you need to shed speed on a washboard trail, a long downhill grade, or a rutted descent with camping gear and armor loaded up. That's a different job than street braking: high load, low speed, repeated hard stops, and fluid that gets shaken around the whole time. This Tank 300 build swaps the stock front brakes for a TTSPORT OR6 direct-mount kit built specifically around that kind of use.
OR6 isn't a street-performance caliper wearing an off-road label — it was engineered around off-road duty from the start: sustained low-speed heavy braking, repeated on/off pedal inputs on rough terrain, fluid disturbance from constant bouncing, and exposure to water, mud, and temperature swings.
Vehicle & Kit Specs
| Item | Specification |
|---|---|
| Vehicle | GWM Tank 300 (OR6 platform also covers Tank 500 and other trucks/SUVs) |
| Front caliper | TTSPORT OR6 direct-mount six-piston forged caliper |
| Bracket | Integrated one-piece bridge/bracket structure, bolts to OEM mounting points |
| Front rotor | TTSPORT 335mm high-carbon rotor |
| Fitment | No knuckle modification, no cutting, no spacers; installs under factory wheels |
The OR6 caliper's official spec sheet is below for reference on piston sizing, dimensions, and platform coverage.
| Brake Caliper | |
|---|---|
| Series | Direct-Mount Series |
| Model / Application | OR6 |
| Axle Position | Front |
| Piston Count | 6-piston |
| Piston Type | One-piece heat-insulated pistons with dust boots |
| Piston Diameter | 40 mm × 4, 43 mm × 2 |
| Caliper Dimensions | L 301 mm × W 149 mm × H 130 mm |
| Total Piston Area | 79 cm² per caliper, all pistons combined |
| Manufacturing Process | Two-piece forged aluminum body |
| Net Weight | 4 kg per caliper, without pads |
| Surface Finish | High-temperature gloss coating |
| Recommended Wheel Size | 17 in or larger |
| Recommended Rotor Size | Ø340–355 mm × 32/34 mm |
| Fitment & Installation | |
| Vehicle Application / Trim Exclusions | 2022-2026 GWM Tank 500 - (345mm × 32mm, Hi4-Z Not Available) 2021-2026 Ford F-150 (P702) - (340mm × 32mm) 2021-2026 Ford F-150 Raptor (3rd Gen. Raptor) - (340mm × 32mm) 2021-2026 Ford Bronco (U725) - (340mm × 32mm) 2022-2026 Ford Bronco Raptor (U725) - (340mm × 32mm) 2022-2026 Ford Ranger (2nd Gen.) - (340mm × 32mm) 2022-2026 Ford Ranger Raptor (2nd Gen.) - (340mm × 32mm) 2009-2023 Toyota LC150 Prado - (345mm × 32mm) 2012-2017 Lexus GX400 - (345mm × 32mm) 2010-2023 Lexus GX460 - (345mm × 32mm) 2008-2021 Toyota LC200 - (355mm × 32mm) 2008-2021 Lexus LX570 - (355mm × 32mm) 2024-2026 Toyota LC250 Prado - (345 mm × 34 mm) 2024-2026 Lexus GX550 - (345 mm × 34 mm) 2007-2021 Toyota Tundra (XK50) - (355mm × 32mm) 2008-2022 Toyota Sequoia (XK60) - (355mm × 32mm) 2022-2026 Toyota LC300 - (345 mm × 34 mm) 2022-2026 Lexus LX600 - (345 mm × 34 mm) 2022-2026 Toyota Tundra (XK70) - (345 mm × 34 mm) 2023-2026 Toyota Sequoia (XK80) - (345 mm × 34 mm) 2007-2018 Jeep Wrangler JK - (345mm × 32mm) 2018-2026 Jeep Wrangler JL - (345mm × 32mm) |
| Minimum Spoke Clearance (mm) | 91 |
| Caliper Mounting Type | Direct mount |
| Brake Line Fitting Type | Vehicle-specific fittings; caliper-side and chassis-side fittings vary by application |
OR6 was developed against the actual chassis structure of these off-road platforms, not adapted from a street caliper. It matches the factory mounting holes directly — no reworking the steering knuckle, no cutting, no stacking spacers — and clears the stock wheel. That matters on a truck where you don't want to trade ground clearance or add failure points just to get bigger brakes.
Why It Works
The caliper uses a one-piece integrated bridge/bracket structure rather than a bolt-on adapter plate. A stiffer mounting path spreads clamping force more evenly and keeps the pedal consistent through repeated hard stops on rough ground — where flex in a bolt-on adapter would otherwise show up as a spongy or inconsistent pedal.
- Six-piston caliper with piston sizing tuned for sustained heavy braking rather than street-style initial bite, giving more predictable stopping power at low speed on loose surfaces.
- Internal fluid passages routed to reduce aeration and pressure fluctuation when the truck is bouncing over washboard or rutted terrain, keeping pedal feel linear.
- 335mm high-carbon rotor adds heat capacity, which helps resist fade during long descents and repeated hard stops under load.
- Direct bolt-up to factory mounting points and clearance under the stock wheel means no spacers, no cutting, and no change to suspension geometry.
OR6 isn't a one-truck fitment. The same caliper and bracket architecture is used across the Tank 500, Ford Raptor, Ford Bronco, Ford Ranger, Land Cruiser/LC300, Prado, and Jeep Wrangler — heavy, hard-used platforms with similar demands on the brake system.
Installation Gallery
Frequently Asked Questions
Does the TTSPORT OR6 kit fit under the factory Tank 300 wheels?
Does installing the OR6 caliper require cutting or modifying the knuckle?
What rotor does the OR6 caliper pair with on this build?
Is the OR6 kit limited to the Tank 300, or does it fit other off-road platforms?
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.