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Product details
An individual Wilwood Dynalite Internal-ST brake caliper, finished in anodized, is specified here. Use the 1.62/1.62-inch piston bores, 5.25-inch mounting centers and 0.81-inch rotor width to compare it with the existing brake assembly. Dynalite Internal-ST combines a forged body and internal fluid routing with Thermlock insulated pistons. It is a four-piston caliper for a measured lug-mount assembly; rotor centering, pad sweep and clearance must be verified before the hydraulic system is commissioned. Based in Camarillo, California, Wilwood Engineering has its origins in the company Bill Wood founded in 1977. Its designs and manufactured disc brake products cover calipers and rotors alongside master cylinders, valves, fittings and lines. Motorsport, street-performance and specialized installations each require components selected for the complete system.
Technical Details
- Manufacturer part number: 120-16438
- Component: Forged Dynalite Internal-ST; one individual caliper
- Placement: Universal mounting orientation; verify axle position
- Construction and finish: Forged aluminum; Type III Anodize
- Pistons: 4; Thermlock insulated; bore dimensions 1.62/1.62 inches
- Hydraulic piston area: 4.12 square inches
- Dust boots: No
- Brake pad shape: 7112; shape number does not specify a friction compound
- Mounting interface: Lug; mounting centers 5.25 inches
- Mounting-hole diameter: 0.39 inches
- Mount height: 2.03 inches
- Hydraulic inlet thread: 1/8-27 NPT
- Nominal rotor width: 0.81 inches
- Rotor width range: 0.75–0.83 inches
- Rotor diameter range: 10.00–13.06 inches
- Caliper weight reference: 3.6 lb
Fitment & Compatibility
This caliper requires the measured 0.81-inch rotor-width configuration and the matching lug bracket on 5.25-inch centers. Axle placement is determined by the engineered brake package, not by a generic caliper designation. Confirm the 1/8-27 NPT hydraulic inlet, pad outline and total piston area with the rest of the brake system before assembly.
Wilwood caliper specifications
With over 20 years of experience in parts and fitment, PMB Performance can help you compare the actual brake assembly. Include rotor width, mounting centers and the existing caliper details when requesting assistance.
