Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
This right-hand Superlite 4R has a 1.88/1.62-inch differential bore configuration in a forged aluminum housing. Stainless pistons, internal fluid ports and radial mounting define the component; it is selected for brake geometry rather than a vehicle-specific bolt-on promise. Wilwood Engineering is a Camarillo, California-based designer and manufacturer of disc brake systems, founded by Bill Wood in 1977. Calipers, brake rotors, master cylinders, valves, fittings and brake lines form its range for motorsport, street-performance and specialized applications.
Technical Details
- Manufacturer part number: 120-13229. Component: Forged Superlite 4 Radial Mount caliper.
- Supply: one brake caliper, not a complete axle brake kit. Match the mating rotor, pads, bracket and connection hardware to the installation.
- Piston dust boots: not fitted.
- Type III anodize finish on a forged aluminum caliper body.
- Caliper weight: approximately 5.3 lb.
- Hydraulic inlet thread: 1/8-27 NPT. Use a fitting with the correct thread and sealing seat.
- 4 stainless steel pistons with 1.88/1.62-inch bore groups. The specified effective area is 4.84 sq in.
- Brake pad profile 7420; select friction material for the actual operating conditions.
- 5.98-inch radial mounting pattern, right hand; mounting height 1.63 inches and hole size 0.39 inch.
- The rotor channel is specified for 1.25-inch nominal width. Rotor outside diameter: 11.75 to 14.00 inches. Specified rotor-width limits: 1.15–1.35 inch.
Fitment & Compatibility
A 1.25-inch-wide nominal rotor and 5.98-inch mount centers are the starting dimensions. Verify the 1.63-inch mounting height, available wheel space and the intended brake balance before replacing another bore configuration.
PMB Performance has worked with brake components for over 20 years. Share the required piston sizing, rotor measurements and bracket drawing for help checking the match.
