Toyota Land Cruiser Prado (J150) Big Brake Kit Upgrade / TTSPORT Direct-Mount OR6
Heavy overlanding rigs like the Toyota Land Cruiser Prado don't just need brakes that work — they need brakes that keep working after an hour of loaded descent on a mountain grade or a slog through washboard and mud. Stock binders on these trucks are sized for everyday driving, and under sustained heat and load they fade, the pedal goes soft, and stopping distances stretch out. This Prado J150 case swaps in TTSPORT's OR6 six-piston front kit, built specifically for high-load, off-road duty.
The owner runs this Prado loaded for long-distance travel and off-pavement work, which means repeated hard, sustained braking rather than the occasional stoplight stop. That duty cycle is exactly what pushes factory calipers and rotors into fade.
Vehicle & Kit Specs
| Item | Specification |
|---|---|
| Vehicle | Toyota Land Cruiser Prado (J150), factory 17-inch wheels |
| Front caliper | TTSPORT OR6 six-piston direct-mount caliper |
| Front rotor | TTSPORT 345mm one-piece, high-carbon rotor |
| Pads / lines | TTSPORT high-performance brake pads, stainless steel brake lines |
| Hardware | Brake fluid, mounting bolts, and installation hardware |
The official TTSPORT spec sheet for the OR6 caliper used in this build is below, including its confirmed fitment for the J150 Prado.
| 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 |
Why It Works
The OR6's six-piston fixed caliper is tuned for piston area and force distribution suited to low-speed, heavy-load braking rather than track-day bite. That matters for a loaded overlander: it's the long, continuous drags — down a grade, hauling camping gear or a trailer — where a linear, predictable pedal counts more than outright peak force.
- High-carbon 345mm rotor holds a stable friction coefficient under repeated high-heat cycles, cutting the shudder and heat-crack risk that come with sustained braking on washboard or gravel.
- Vehicle-specific bracket bolts to the factory mounting points — no cutting, no modification to the stock structure — and still clears the factory 17-inch wheel.
- A high-strength bracket keeps the caliper rigid through repeated impacts — potholes, water crossings, rough trail — so there's less play and less brake-feel drift over a long trip.
Installation Gallery
FAQ
Does the TTSPORT OR6 kit fit under the Prado J150's factory 17-inch wheels?
What rotor size does this Prado J150 kit use?
What else is included besides the caliper and rotor?
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.