Wilwood Type III Anodized Dynapro Radial Dust Seal 4-Piston Caliper, 0.50-Inch Rotor Width

This Wilwood Dynapro Radial Dust Seal is a 4-piston brake caliper with a Type III anodized finish for a nominally 0.50-inch-wide rotor. Its 5.98-inch radial mounting centers and 1.50-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.

This four-piston radial Dynapro includes piston dust wipers. The radial mounting centers are common to several rotor-width and radius versions, so bracket height, pad sweep and actual rotor dimensions must all be compared.

Technical Details

• Manufacturer part number: 120-14703
• Component: Wilwood Dynapro Radial Dust Seal; one caliper
• Mounting: universal side configuration; Radial; 5.98-inch centers; 0.39-inch mounting holes
• Piston arrangement: 4 pistons; 1.50-inch bores; stainless steel
• Hydraulic piston area: 3.54 square inches, as specified by Wilwood
• Rotor width: 0.50-inch nominal; 0.38–0.50-inch permitted range
• Rotor diameter range: 10.75–12.19 inches
• Pad shape: Wilwood type 7816; compound selected separately
• Body and finish: Forged aluminum; Type III anodized
• Fluid inlet: 1/8-27 NPT
• Dust boots: Yes
• Mount height: 1.61 inches

Fitment & Compatibility

Check mounting-center spacing and bracket offset together, then confirm the pad sits fully on the rotor friction surface. Piston area must suit the master cylinder and front-to-rear brake 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.