Wilwood Red Right TX6R Brake Caliper with 9.63-Inch Radial Centers and 2.00/1.88/1.88-Inch Bores

This Wilwood TX6R is a right-hand 6-piston brake caliper with a red finish for a nominally 1.50-inch-wide rotor. Its 9.63-inch radial mounting centers and 2.00/1.88/1.88-inch piston bores must match the brake assembly. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. The company makes disc brake systems and components, including calipers, rotors, master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized applications.

The TX6R is a six-piston radial-mount caliper developed for heavy truck, SUV and specialized severe-duty brake systems. Type 10120 pads provide its large friction package; installation still requires a matching rotor, bracket and hydraulic design.

Technical Details

• Manufacturer part number: 120-13813-RD
• Component: Wilwood TX6R; one caliper
• Mounting: Right hand; Radial; 9.63-inch centers
• Piston arrangement: 6 pistons; 2.00/1.88/1.88-inch bores; stainless steel
• Hydraulic piston area: 8.70 square inches, as specified by Wilwood
• Rotor width: 1.50-inch nominal; 1.42–1.50-inch permitted range
• Rotor diameter range: 14.25–16.00 inches
• Pad shape: Wilwood type 10120; compound selected separately
• Body and finish: Forged aluminum; Red Powder Coat
• Fluid inlet: 1/8-27 NPT
• Dust boots: Yes
• Mount height: 3.07 inches

Fitment & Compatibility

For a replacement, compare the entire caliper specification rather than the finish or logo. On an adapted system, establish rotor alignment and piston-area requirements before choosing the mounting bracket.

This listing covers one caliper. Match the brake pads, rotor, hose and mounting arrangement to the complete brake system.

PMB Performance has over 20 years of brake and parts experience. Send us the caliper specifications, rotor measurements and bracket details if you need help selecting the correct component.