Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
For a Dynalite-M installation using a thicker rotor, this red caliper provides the 1.25-inch nominal-width body with four equal-bore pistons. The forged construction, stainless bridge wear plates and internal hydraulic passages are features of the series. Its 4.80-square-inch published piston area is relevant when replacing a caliper in an already balanced brake system. 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: 120-17773-RD
- Caliper type: Forged Dynalite-M
- Construction: Forged Aluminium
- Finish: Red Powder Coat
- Piston bores: 1.75 / 1.75 inches
- Piston type: Stainless
- Piston count: 4
- Published piston area: 4.80 square inches
- Dust boots: No
- Nominal rotor width: 1.25 inch
- Rotor thickness limits: 1.19–1.27 inches
- Rotor diameter limits: 10.00–12.19 inches
- Mounting style: Lug
- Handedness: Not restricted to one side; correct mounting and bleed orientation required
- Mounting centers: 5.25 inches
- Mounting-hole size: 0.39 inch
- Mount height: 2.03 inch
- Hydraulic inlet thread: 1/8-27 NPT
- Required pad shape: 7112
- Published pad area: 6.36 square inches
- Published pad volume: 2.1 cubic inches
- Manufacturer-listed component weight: 3.4 lb
Fitment & Compatibility
Before ordering, establish the precise caliper body needed by the conversion kit and compare the rotor with the listed width limits. Lug spacing alone does not confirm the mount height or pad alignment. Inspect the wheel barrel and spokes around the complete assembly, and retain the specified hydraulic fitting and pad retention arrangement.
PMB Performance has over 20 years of experience helping customers with brake and parts fitment. Share the installed component identification and relevant measurements when requesting assistance.
