Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
Four 1.38-inch stainless pistons give this black DynaPro its 3.00-square-inch published piston area. The forged body is the nominal 0.81-inch rotor-width version with 5.25-inch lug centers. It is intended as a matched component in a brake package whose hydraulic and mounting dimensions are already established. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. The company makes disc brake systems and components for motorsport, street-performance and specialized uses, including calipers, brake rotors, master cylinders, valves, fittings and brake lines; each component must match the requirements of the complete brake system.
Technical Details
- Manufacturer part number: 120-9703
- Caliper type: Dynapro Lug Mount
- Construction: Forged Aluminium
- Finish: Black Powder Coat
- 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: 0.81 inch
- Rotor thickness limits: 0.75–0.83 inches
- Rotor diameter limits: 10.00–13.06 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: 2.10 inch
- Hydraulic inlet thread: 1/8-27 NPT
- Required pad shape: 7812
- Published pad area: 6.36 square inches
- Published pad volume: 2.1 cubic inches
- Manufacturer-listed component weight: 3.8 lb
Fitment & Compatibility
Confirm the rotor’s measured width and the bracket’s stand-off, then check the pad track against a suitable rotor diameter. The 2.10-inch mount height and wheel outline must also match the installation. Use the correct NPT fitting and compare piston area with the existing caliper before making a substitution.
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.
