Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
With 4 pistons and 1.75/1.75-inch bore dimensions, the anodized Wilwood DynaPro-ST brake caliper must be matched to the brake system rather than selected by finish alone. Its 0.81-inch rotor-width specification is separate from rotor diameter. Thermlock pistons distinguish this DynaPro-ST from the stainless-piston DynaPro configurations. It uses the lug-mount arrangement and 7812 pad outline listed below; match rotor centering and hydraulic area before mixing caliper families. 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: 120-16504
- Component: Dynapro Lug Mount-ST; one individual caliper
- Placement: Universal mounting orientation; verify axle position
- Construction and finish: Forged aluminum; Type III Anodize
- 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: 4.0 lb
- Pistons: 4; Thermlock insulated; bore dimensions 1.75/1.75 inches
- Hydraulic piston area: 4.80 square inches
- Dust boots: No
- Brake pad shape: 7812; shape number does not specify a friction compound
- Mounting interface: Lug; mounting centers 5.25 inches
- Mounting-hole diameter: 0.39 inches
- Mount height: 2.10 inches
- Hydraulic inlet thread: 1/8-27 NPT
Fitment & Compatibility
Verify the lug mounting interface and the complete rotor-width range shown above. Axle placement is determined by the engineered brake package, not by a generic caliper designation. Account for the 1.75/1.75-inch bores when selecting the master cylinder and front-to-rear balance. Check that the 1/8-27 NPT fitting, flexline and wheel remain clear throughout their operating movement.
Wilwood caliper specifications · Wilwood technical reference
A correct caliper choice begins with the complete brake arrangement. PMB Performance has over 20 years of parts and fitment experience; send the mounting geometry and rotor dimensions for help with your selection.
