Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
For a brake assembly built around a nominally 0.38-inch-wide rotor, this black Wilwood Forged Dynalite Internal supplies four 1.75-inch stainless pistons in a forged aluminum body. Its 5.25-inch lug pattern locates the attachment points, while rotor offset and pad sweep determine the bracket arrangement. 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 four-piston Dynalite uses internal fluid transfer in a spacerless body. Its 5.25-inch mounting pattern is only one compatibility dimension: rotor position, body clearance and hydraulic area also need to agree.
Technical Details
- Manufacturer part number: 120-13843-BK
- Component: Wilwood Forged Dynalite Internal; one caliper
- 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 7112; compound selected separately
- Mounting: universal side configuration; Lug; 5.25-inch centers; 0.39-inch mounting holes
- Mount height: 2.03 inches
- Rotor width: 0.38-inch nominal; 0.25–0.38-inch permitted range
- Rotor diameter range: 10.00–13.06 inches
- Fluid inlet: 1/8-27 NPT
- Dust boots: No
- Body and finish: Forged aluminum; Black Powder Coat
Fitment & Compatibility
Check the caliper-to-bracket attachment and rotor offset before ordering. Changing piston diameter changes hydraulic requirements even when a different caliper shares the same bolt spacing.
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.
