Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
Check the 5.98-inch mounting centers before fitting this anodized Wilwood FNSL4R brake caliper. The component is sold individually and uses 1.38/1.38-inch bores in its 0.95-inch rotor-width configuration. Founded by Bill Wood in 1977, Wilwood Engineering is based in Camarillo, California. It designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings and brake lines, for motorsport, street-performance and specialized applications. Components must be selected to suit the complete brake system. The Forged Narrow Superlite 4R is a four-piston radial caliper using the 7416 pad outline. Its nominal 0.95-inch-wide rotor configuration must be matched to the mounting height and hydraulic balance of the installation. Wheel clearance is determined by the entire caliper-and-bracket envelope.
Technical Details
- Manufacturer part number: 120-16683
- Component: Forged Narrow Superlite 4 Radial Mount; one individual caliper
- Placement: Universal mounting orientation; verify axle position
- Construction and finish: Forged aluminum; Type III Anodize
- Nominal rotor width: 0.95 inches
- Rotor width range: 0.89–0.99 inches
- Rotor diameter range: 11.42–14.00 inches
- Caliper weight reference: 5.0 lb
- Pistons: 4; stainless steel; bore dimensions 1.38/1.38 inches
- Hydraulic piston area: 3.00 square inches
- Dust boots: No
- Brake pad shape: 7416; shape number does not specify a friction compound
- Mounting interface: Radial; mounting centers 5.98 inches
- Mounting-hole diameter: 0.39 inches
- Mount height: 1.45 inches
- Hydraulic inlet thread: 1/8-27 NPT
Fitment & Compatibility
Check bracket location and rotor sweep using the installation drawing; 5.98-inch radial mounting alone does not establish a vehicle fit. Axle placement is determined by the engineered brake package, not by a generic caliper designation. Use the 1.38/1.38-inch piston-bore specification when reviewing hydraulic balance, and verify hose routing and wheel clearance.
Wilwood caliper specifications · Wilwood technical reference
PMB Performance brings over 20 years of parts and fitment experience to brake component selection. A photograph of the existing brake and its mounting measurements helps us check the required configuration.
