Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
A nominal 1.00-inch rotor width identifies this red Wilwood Forged Dynalite Internal configuration. It has four 1.75-inch stainless pistons, internal fluid passages and a forged aluminum body that attaches on 5.25-inch lug centers. Wilwood specifies a 4.80-square-inch piston area, which should be compared with the requirements of the intended hydraulic system. 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: 120-13845-RD
- Component: Wilwood Forged Dynalite Internal; one caliper
- Mounting: universal side configuration; Lug; 5.25-inch centers; 0.39-inch mounting holes
- Piston arrangement: 4 pistons; 1.75-inch bores; stainless steel
- Hydraulic piston area: 4.80 square inches, as specified by Wilwood
- Rotor width: 1.00-inch nominal; 0.94–1.04-inch permitted range
- Rotor diameter range: 10.00–13.06 inches
- Pad shape: Wilwood type 7112; compound selected separately
- Body and finish: Forged aluminum; Red Powder Coat
- Fluid inlet: 1/8-27 NPT
- Dust boots: No
- Mount height: 2.03 inches
Fitment & Compatibility
The rotor must measure within the 0.94–1.04-inch width range and 10.00–13.06-inch diameter envelope. A suitable bracket needs to place the type 7112 pads on the friction surface while centering the body over the disc. Confirm the caliper’s 2.03-inch mount height and the available wheel space before choosing it for an existing assembly.
This listing covers one caliper. Match the brake pads, rotor, hose and mounting arrangement to the complete brake system.
Ask PMB Performance for help comparing this caliper with your existing assembly. Our over 20 years of experience are most useful when you provide rotor size, mounting details and the current piston configuration.
