Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
The anodized Wilwood Powerlite-ST is an individual brake caliper. It combines a 5.08-inch attachment span with 1.25/1.25-inch piston bores; confirm the rotor centerline and 0.86-inch width configuration before installation. Powerlite-ST uses a compact radial-mount body with Thermlock insulated pistons and top-supported 7912-shape pads. The bore size must be selected with the master cylinder and hydraulic balance; nominal rotor width is independent of rotor diameter and wheel diameter. For motorsport, street-performance and specialized braking applications, Wilwood Engineering designs and manufactures disc brake systems and their individual components. Founded by Bill Wood in 1977 and based in Camarillo, California, Wilwood supplies a range encompassing calipers, rotors, master cylinders, valves, fittings and brake lines, all selected to match the complete system.
Technical Details
- Manufacturer part number: 120-15735
- Component: Powerlite Radial Mount; one individual caliper
- Placement: Universal mounting orientation; verify axle position
- Construction and finish: Forged aluminum; Type III Anodize
- Pistons: 4; Thermlock insulated; bore dimensions 1.25/1.25 inches
- Hydraulic piston area: 2.46 square inches
- Dust boots: No
- Brake pad shape: 7912; shape number does not specify a friction compound
- Nominal rotor width: 0.86 inches
- Rotor width range: 0.79–0.86 inches
- Rotor diameter range: 9.45–11.00 inches
- Caliper weight reference: 2.8 lb
- Mounting interface: Radial; mounting centers 5.08 inches
- Mounting-hole diameter: 0.40 inches
- Mount height: 1.56 inches
- Hydraulic inlet thread: 1/8-27 NPT
Fitment & Compatibility
Compare the caliper drawing with your radial bracket before ordering. The 5.08-inch mounting centers and 1.25/1.25-inch bores must suit the installed rotor offset and hydraulic system. Axle placement is determined by the engineered brake package, not by a generic caliper designation. A suitable pad sweep and clearance inside the wheel must be verified independently of rotor width.
Wilwood caliper specifications · Wilwood technical reference
For a modified brake system, provide its existing component specifications along with the vehicle details. PMB Performance has over 20 years of parts and fitment experience to help check the assembly before purchase.
