Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
Four 1.38-inch stainless pistons identify this anodized Powerlite radial caliper. The rotor opening belongs to the thinner 0.35–0.50-inch configuration, with a published piston area of 3.00 square inches. It is a brake conversion or service component that must agree with the existing rotor and hydraulic design. Bill Wood founded Wilwood Engineering in 1977; the company is based in Camarillo, California. Wilwood designs and manufactures disc brake systems and components, from calipers and brake rotors to master cylinders, valves, fittings and brake lines, for motorsport, street-performance and specialized applications; selection depends on the complete brake system.
Technical Details
- Manufacturer part number: 120-8726
- Caliper type: Powerlite Radial Mount
- Construction: Forged Aluminium
- Finish: Type III Anodize
- Piston bores: 1.38 / 1.38 inches
- Piston type: Stainless
- Piston count: 4
- Published piston area: 3.00 square inches
- Dust boots: No
- Nominal rotor width: 0.50 inch
- Rotor thickness limits: 0.35–0.50 inches
- Rotor diameter limits: 9.45–11.00 inches
- Mounting style: Radial
- Handedness: Not restricted to one side; correct mounting and bleed orientation required
- Mounting centers: 5.08 inches
- Mounting-hole size: 0.40 inch
- Mount height: 1.56 inch
- Hydraulic inlet thread: 1/8-27 NPT
- Required pad shape: 7912
- Published pad area: 5 square inches
- Published pad volume: 1.8 cubic inches
- Manufacturer-listed component weight: 2.8 lb
Fitment & Compatibility
Match radial stud spacing and mounting height, then establish the rotor’s lateral position and pad overlap. The compact profile does not guarantee clearance inside every small wheel. Compare the exact pad shape and the 1/8-27 NPT inlet with the installed assembly before selecting a replacement.
For help identifying the correct brake component, provide the caliper markings and installation dimensions. PMB Performance has over 20 years of experience with parts and brake-system details.
