Wilwood Dynapro Narrow Lug Mount Brake Caliper, Black / 0.31–0.42-Inch Rotor Width

Choose this Wilwood Dynapro Narrow Lug Mount when the installation calls for 1.75-inch pistons and 0.38-inch rotor width. The black 4-piston body uses a 5.25-inch lug pattern; check its complete geometry before substituting another caliper. Bill Wood founded Wilwood Engineering in 1977. Based in Camarillo, California, Wilwood designs and manufactures disc brake systems and parts for motorsport, street-performance and specialized applications, from calipers and rotors to master cylinders, valves, fittings and brake lines.

Technical Details

• Manufacturer part number: 120-15374-BK
• Component: Wilwood Dynapro Narrow Lug Mount; one caliper
• Rotor width: 0.38-inch nominal; 0.31–0.42-inch permitted range
• Rotor diameter range: 10.00–13.06 inches
• Mounting: universal side configuration; Lug; 5.25-inch centers; 0.39-inch mounting holes
• Mount height: 2.10 inches
• Piston arrangement: 4 pistons; 1.75-inch bores; stainless steel
• Hydraulic piston area: 4.80 square inches, as specified by Wilwood
• Pad shape: Wilwood type 7812; compound selected separately
• Body and finish: Forged aluminum; Black Powder Coat
• Dust boots: No
• Fluid inlet: 1/8-27 NPT

This narrower-outboard-profile Dynapro uses four pistons with a 5.25-inch lug pattern. Top-access type 7812 pads and internal fluid passages support service, but the reduced profile must be checked against the actual wheel and rotor-hat dimensions.

Fitment & Compatibility

Plan the caliper installation with the rotor centered in the pad gap. Verify attachment hardware, hose connection and accessible upper bleeders, then confirm the brake system’s hydraulic balance.

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.