Ford F-150 Raptor Big Brake Kit Upgrade / TTSPORT Direct-Mount OR6
The F-150 Raptor is built for high-speed desert running — wide track, long-travel suspension, a reinforced frame — but all that off-road capability comes with a real cost: weight. Stock curb weight sits north of 2.5 tons, and once you bolt on a front bumper, a winch, a roof rack, camping gear, and off-road tires, it's easy to cross the 3-ton mark. Owners running this setup on 17-inch wheels reported the same problem: stomp the brake pedal on the highway, on a long mountain descent, or while towing, and the truck just keeps creeping forward. This case swaps the front brakes for TTSPORT's OR6 direct-mount kit, built specifically for heavy, loaded-up off-road trucks.
A loaded-out Raptor pushing 3 tons puts real strain on the stock front brakes. On a hard stop from highway speed, a long descent, or a trailer pull, undersized brakes lose their margin fast — and that margin is a safety issue, not a comfort one.
Vehicle & Kit Specs
This build stays on the factory 17-inch wheel and pairs a forged six-piston caliper with a larger rotor on the front axle, without touching the OEM master cylinder or brake balance.
| Item | Specification |
|---|---|
| Vehicle | Ford F-150 Raptor, 17-inch wheels, front axle upgrade |
| Front caliper | TTSPORT OR6 forged six-piston direct-mount caliper |
| Front rotor | TTSPORT 345mm one-piece rotor |
| Pads / lines | TTSPORT performance brake pads, stainless steel brake lines |
| Hardware | Brake fluid, mounting bolts and fitting hardware |
Below is the full official spec sheet for the OR6 caliper used in this build:
| 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 pairs a forged six-piston body with an integrated caliper bracket. That combination adds rigidity over a stock floating caliper, which means less flex under hard braking and a more direct pedal response. TTSPORT also reworked the piston sizing and internal oil circuit for heavier trucks specifically, aiming to keep braking force linear rather than tapering off as heat builds.
- Designed to hold a linear brake feel and resist fade under loads over 1 ton or during long, continuous descents.
- Stainless steel pistons resist corrosion and sand/mud intrusion; high-temperature seals stay stable through repeated hard stops.
- High-strength caliper body is built to shrug off rock-strike impact common on off-road trails.
- Fits behind the stock 17-inch wheel and matches the OEM master cylinder, so there's no oversized pedal effort, no odd pedal travel, and no shifted brake bias.
Installation Gallery
FAQ
Does the TTSPORT OR6 kit fit under the stock 17-inch Raptor wheel?
What's included in this Raptor front brake kit?
Is the OR6 caliper built to handle off-road abuse?
Need fitment confirmation? Choose the closest TTSPORT series or send your vehicle, wheel size, and intended use before ordering.