Wilwood Polished Dynapro LP Dust Seal Brake Caliper with 1.12-Inch Pistons, 5.25-Inch Lugs

Choose this Wilwood Forged Dynapro Low Profile Dust Seal when the installation calls for 1.12-inch pistons and 0.81-inch rotor width. The polished 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.

This low-profile, dust-sealed Dynapro is designed around type 4812 pads for limited outboard rotor-hat clearance and narrower swept areas. It uses 5.25-inch lug centers, but pad depth and body clearance must be checked before substituting it for a taller Dynapro or Dynalite.

Technical Details

• Manufacturer part number: 120-15585-P
• Component: Wilwood Forged Dynapro Low Profile Dust Seal; one caliper
• Body and finish: Forged aluminum; Polish
• Dust boots: Yes
• Piston arrangement: 4 pistons; 1.12-inch bores; stainless steel
• Hydraulic piston area: 1.98 square inches, as specified by Wilwood
• Mounting: universal side configuration; Lug; 5.25-inch centers; 0.39-inch mounting holes
• Mount height: 2.10 inches
• Fluid inlet: 1/8-27 NPT
• Pad shape: Wilwood type 4812; compound selected separately
• Rotor width: 0.81-inch nominal; 0.75–0.83-inch permitted range
• Rotor diameter range: 11.00–13.06 inches

Fitment & Compatibility

Use the caliper drawing to compare the mounting holes and body envelope with the installed brake assembly. Confirm piston sizes and brake balance before changing to a different bore configuration.

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.