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Product details
This Wilwood Billet Narrow Dynalite Radial is a 4-piston brake caliper with a Type III anodized finish for a nominally 0.81-inch-wide rotor. Its 4.75-inch radial mounting centers and 1.62-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 Billet Narrow Dynalite radial caliper uses four stainless pistons, internal fluid transfer and type 7816 pads. Its 4.75-inch stud spacing differs from the 3.50-inch lug-mount Narrow Dynalite layout.
Technical Details
- Manufacturer part number: 120-15565-SI
- Component: Wilwood Billet Narrow Dynalite Radial; one caliper
- Body and finish: Billet aluminum; Type III anodized
- Dust boots: No
- Piston arrangement: 4 pistons; 1.62-inch bores; stainless steel
- Hydraulic piston area: 4.12 square inches, as specified by Wilwood
- Mounting: universal side configuration; Radial; 4.75-inch centers; 0.39-inch mounting holes
- Mount height: 1.24 inches
- Fluid inlet: 1/8-27 NPT
- Pad shape: Wilwood types 7816 / 7216; compound selected separately
- Rotor width: 0.81-inch nominal; 0.75–0.81-inch permitted range
- Rotor diameter range: 11.75–12.19 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.
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.
