Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
This Wilwood Dynapro Dust-Boot is a 4-piston brake caliper with a black finish for a nominally 1.00-inch-wide rotor. Its 5.25-inch lug mounting centers and 1.75-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 dust-booted Dynapro uses aluminum pistons protected from road or track debris by external boots. Wilwood specifies this construction for low to intermediate temperature applications; select a different piston and seal arrangement if the operating temperature demands it.
Technical Details
- Manufacturer part number: 120-15131-BK
- Component: Wilwood Dynapro Dust-Boot; one caliper
- Body and finish: Forged aluminum; Black Powder Coat
- Dust boots: Yes
- Piston arrangement: 4 pistons; 1.75-inch bores; aluminum
- Hydraulic piston area: 4.80 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 7812; compound selected separately
- Rotor width: 1.00-inch nominal; 0.94–1.04-inch permitted range
- Rotor diameter range: 10.00–13.06 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.
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.
