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Product details
The red Wilwood Narrow Dynapro combines four equal stainless pistons with a billet body and thin-pad configuration. The 0.25-inch rotor-width channel and 4.75-inch radial mount require a bracket and rotor selected for those dimensions. From its base in Camarillo, California, Wilwood Engineering designs and manufactures disc brake systems and components. Bill Wood founded the company in 1977; its motorsport, street-performance and specialized range includes calipers, brake rotors, master cylinders, valves, fittings and brake lines.
Technical Details
- Manufacturer part number: 120-17628-RD. Type: Narrow Dynapro Radial Mount caliper.
- Rotor channel: 0.25-inch nominal width. Specified width limits: 0.25 inch; rotor outside diameter: 10.75–12.19 inches.
- Piston arrangement: 4 stainless steel pistons; bore specification 1.12/1.12 inches. Effective piston area: 1.98 square inches.
- Caliper body: billet aluminum; finish: Red Powder Coat.
- Mounting: radial, 4.75-inch centers; orientation: universal. 0.39-inch holes; 1.61-inch mounting height.
- Brake pad shape: 7812. Choose pad dimensions and friction material for the brake system.
- Hydraulic inlet thread: M10 x 1.25. Match the fitting thread and sealing arrangement to the brake hose.
- Piston dust boots: no.
- Caliper component weight: approximately 4.1 lb.
- Component: one individual hydraulic brake caliper. Select the mating rotor, pads, mounting hardware and line connection to suit the complete brake assembly.
Fitment & Compatibility
Use a 10.75–12.19-inch rotor with the correct pad sweep and thickness arrangement. Match the 1.98-square-inch effective area to the hydraulic system, and confirm the M10 x 1.25 line connection clears the surrounding hardware.
PMB Performance brings over 20 years of experience to brake-component selection. Share the installed caliper, rotor size and mounting arrangement so the relevant dimensions can be compared.
