Wilwood Front Red TX6R Brake Kit for Ford F-150 (2021–2025), 15.5-Inch GT-Slotted Rotors

The red TX6R front kit pairs 15.50 x 1.38-inch GT rotors with six-piston calipers for the specified F-150 versions. Its supplied hose set serves the new hydraulic brakes, while wheel clearance and trim-specific fitment still need verification. From its base in Camarillo, California, Wilwood Engineering designs and manufactures disc brake systems for motorsport, street-performance and specialized applications. Founded by Bill Wood in 1977, the company also produces the individual calipers, brake rotors, master cylinders, valves, fittings and brake lines used in these installations. Selection should account for how each component works within the complete brake system.

Technical Details

• Manufacturer part number: 140-18205-R
• Rotor specification: Spec-37 Iron, GT Slotted, vented; 15.50 x 1.38 inches
• Caliper specification: 6-piston TX6R in Red Powder Coat; radial mount
• Included service pad compound: BP-22; Stainless pistons
• Caliper body material: Forged aluminum
• Hydraulic inlet: 1/8-27 NPT
• Rotor/hat wheel-stud clearance pattern(s): 6 X 5.32 in; 6 X 135.13 mm; match the installed hub/axle pattern
• Hydraulic brake hoses: included; DOT-approved hose kit
• Wheel clearance: 20-inch wheels may fit; verify the manufacturer’s complete caliper/rotor template for the installed wheel
• Supplied as one kit with mounting hardware; spindles, hubs, master cylinder and booster are not included

Fitment & Compatibility

For the listed 2021–2025 F-150 trims and configurations. Coverage of Limited, Raptor, Raptor R, STX and other models is year-specific; verify the table and the vehicle’s original brake/hub arrangement before ordering.

The 15.50-inch rotors use the six-lug 135 mm nominal wheel-stud pattern. Check the wheel diagram and install the included 30-inch hose set without tension, twisting or contact at full steering and suspension travel.

Check the complete application table below, including its model-year splits and configuration notes.

Manufacturer Resources

• Exact Wilwood kit specifications and wheel-clearance information
• Installation instructions and component list

WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.

With over 20 years of parts and fitment experience, PMB Performance can help review the intended brake installation. Provide your VIN, wheel measurements and any modified axle or spindle details when asking about compatibility.

Vehicle Applications

Application Notes

1. Line kit included (manufacturer): 220-17001 (30.00 in)
2. Front line-kit reference: 220-17001