Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
This red DynaPro is a radial-mount hydraulic caliper with four 1.25-inch aluminum pistons and protective dust boots. It uses the nominal 0.81-inch rotor opening and retains the series’ internal fluid passages. Choose it by bore, rotor width and mounting geometry when repairing or building a matched brake package. 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: 120-7374-RD
- Caliper type: Dynapro Radial Mount
- Construction: Forged Aluminium
- Finish: Red Powder Coat
- Piston bores: 1.25 / 1.25 inches
- Piston type: Aluminum
- Piston count: 4
- Published piston area: 2.46 square inches
- Dust boots: Yes
- Nominal rotor width: 0.81 inch
- Rotor thickness limits: 0.75–0.86 inches
- Rotor diameter limits: 10.75–12.19 inches
- Mounting style: Radial
- Handedness: Not restricted to one side; correct mounting and bleed orientation required
- Mounting centers: 5.98 inches
- Mounting-hole size: 0.39 inch
- Mount height: 1.61 inch
- Hydraulic inlet thread: 1/8-27 NPT
- Required pad shape: 7816
- Published pad area: 6.36 square inches
- Published pad volume: 3 cubic inches
- Manufacturer-listed component weight: 4.1 lb
Fitment & Compatibility
Check the 0.75–0.83-inch rotor thickness limits and the 10.75–12.19-inch diameter envelope against the actual rotor. The mounting bracket must locate the pad at the correct radial height and lateral position. Confirm hydraulic balance and clearance to the wheel barrel, spokes and hose connection.
With over 20 years of parts experience, PMB Performance can help compare this component with your existing brake assembly. Include its caliper reference and any conversion-kit information.
