Wilwood SX6R Brake Caliper, Right / 1.25-Inch Rotor Width, Black, 1.75/1.38/1.38-Inch Pistons

Black finish and 1.75/1.38/1.38-inch bores distinguish this Wilwood SX6R configuration. It is a right-hand 6-piston brake caliper for 1.25-inch-wide rotors, with 9.84-inch radial attachment centers. 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.

Technical Details

• Manufacturer part number: 120-14860-BK
• Component: Wilwood SX6R; one caliper
• Rotor width: 1.25-inch nominal; 1.10–1.28-inch permitted range
• Rotor diameter range: 12.88–15.00 inches
• Mounting: Right hand; Radial; 9.84-inch centers; 0.52-inch mounting holes
• Piston arrangement: 6 pistons; 1.75/1.38/1.38-inch bores; stainless steel
• Hydraulic piston area: 5.40 square inches, as specified by Wilwood
• Pad shape: Wilwood type D1792; compound selected separately
• Body and finish: Forged aluminum; Black Powder Coat
• Dust boots: No
• Fluid inlet: 1/8-27 NPT

SX6R calipers combine six differential-bore pistons with dust wipers and a 9.84-inch radial mounting pattern. The D1792 pad outline and body envelope differ from smaller radial calipers, even when rotor thickness is similar.

Fitment & Compatibility

Compare the existing caliper’s piston area, rotor capacity and mounting pattern. Matching the body family alone does not guarantee that the replacement will clear the wheel or preserve pedal travel.

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

For a brake system assembled from individual components, PMB Performance brings over 20 years of experience. Contact us with the rotor, caliper and bracket information so we can help check the combination.