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Product details
This DynaPro Single uses two 1.38-inch stainless pistons in the compact 3.25-inch lug body. Its published 1.50-square-inch piston area is the smaller hydraulic option relative to the 1.75-inch version. A Type III anodized housing and nominal 0.38-inch rotor opening complete the selected configuration. Based in Camarillo, California, Wilwood Engineering was founded by Bill Wood in 1977. The manufacturer produces disc brake systems and components for motorsport, street-performance and specialized applications, with a range covering calipers, brake rotors, master cylinders, valves, fittings and brake lines. Individual components are chosen to suit the complete brake system.
Technical Details
- Manufacturer part number: 120-9688
- Caliper type: Dynapro Single
- Construction: Billet Aluminium
- Finish: Type III Anodize
- Piston bores: 1.38 inches
- Piston type: Stainless
- Piston count: 2
- Published piston area: 1.50 square inches
- Dust boots: No
- Nominal rotor width: 0.38 inch
- Rotor thickness limits: 0.25–0.38 inches
- Rotor diameter limits: 6.00–13.00 inches
- Mounting style: Lug
- Handedness: Not restricted to one side; correct mounting and bleed orientation required
- Mounting centers: 3.25 inches
- Mounting-hole size: 0.39 inch
- Mount height: 1.92 inch
- Hydraulic inlet thread: 1/8-27 NPT
- Required pad shape: 6812
- Published pad area: 3 square inches
- Published pad volume: 1.1 cubic inches
- Manufacturer-listed component weight: 2.3 lb
Fitment & Compatibility
Check the installed brake package for its intended piston size before choosing a dimensionally similar DPS. Rotor offset, mount height and pad sweep must also agree with the bracket. Verify the 0.25–0.38-inch thickness range and the full wheel envelope, including the NPT inlet and hose connection.
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.
