Fitment questions?
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Product details
For a brake system using a 0.81-inch-wide rotor, this red Wilwood Forged Dynalite Internal provides 4 pistons with 1.62-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.
Technical Details
- Manufacturer part number: 120-13842-RD
- Component: Wilwood Forged Dynalite Internal; one caliper
- Pad shape: Wilwood type 7112; compound selected separately
- Rotor width: 0.81-inch nominal; 0.75–0.83-inch permitted range
- Rotor diameter range: 10.00–13.06 inches
- Mounting: universal side configuration; Lug; 5.25-inch centers; 0.39-inch mounting holes
- Mount height: 2.03 inches
- Piston arrangement: 4 pistons; 1.62-inch bores; stainless steel
- Hydraulic piston area: 4.12 square inches, as specified by Wilwood
- Fluid inlet: 1/8-27 NPT
- Body and finish: Forged aluminum; Red Powder Coat
- Dust boots: No
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.
Fitment & Compatibility
Check pad depth against the rotor’s usable friction annulus. Rotor-hat clearance, mounting offset and the wheel’s inner profile must also be checked with the caliper drawing.
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.
