Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
For a brake system using a 1.00-inch-wide rotor, this polished Wilwood Forged Dynalite Internal provides 4 pistons with 1.75-inch bores. The caliper attaches on 5.25-inch lug centers. Founded in 1977 by Bill Wood, Camarillo, California-based Wilwood Engineering manufactures disc brake components for motorsport, street-performance and specialized uses. Its range covers calipers, rotors, 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-P
- 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; Polish
- Fluid inlet: 1/8-27 NPT
- Dust boots: No
- Mount height: 2.03 inches
Fitment & Compatibility
Measure rotor width before comparing calipers. Verify the mount height, rotor centerline and available wheel space; a common piston count does not establish interchangeability.
This listing covers one caliper. Match the brake pads, rotor, hose and mounting arrangement to the complete brake system.
PMB Performance’s team has over 20 years of experience with brake components and fitment. We can help review this caliper against the dimensions and hydraulic requirements of your brake system.
