Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
Choose this right-hand Wilwood Forged Superlite 4R when the installation calls for 1.88/1.75-inch pistons and 0.81-inch rotor width. The Type III anodized 4-piston body uses a 5.98-inch radial pattern; check its complete geometry before substituting another caliper. Bill Wood founded Wilwood Engineering in 1977. Based in Camarillo, California, Wilwood designs and manufactures disc brake systems and parts for motorsport, street-performance and specialized applications, from calipers and rotors to master cylinders, valves, fittings and brake lines.
Internal fluid passages and radial mounting distinguish this four-piston Superlite. The selected piston design and bore sizes must match the brake balance calculation; they are not interchangeable merely because the mounting centers agree.
Technical Details
- Manufacturer part number: 120-13828
- Component: Wilwood Forged Superlite 4R; one caliper
- Mounting: Right hand; Radial; 5.98-inch centers; 0.39-inch mounting holes
- Piston arrangement: 4 pistons; 1.88/1.75-inch bores; Thermlock
- Hydraulic piston area: 5.18 square inches, as specified by Wilwood
- Rotor width: 0.81-inch nominal; 0.75–0.90-inch permitted range
- Rotor diameter range: 11.75–14.00 inches
- Pad shape: Wilwood type 7420; compound selected separately
- Body and finish: Forged aluminum; Type III anodized
- Fluid inlet: 1/8-27 NPT
- Dust boots: No
- Mount height: 1.63 inches
Fitment & Compatibility
Plan the caliper installation with the rotor centered in the pad gap. Verify attachment hardware, hose connection and accessible upper bleeders, then confirm the brake system’s hydraulic balance.
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.
