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Product details
The black DynaPro Single caliper in this listing has two 1.38-inch stainless pistons and a 3.75-inch lug mount. Its rotor opening is nominally 0.38 inch. The bracket must use the correct mounting centers; the DPS family also includes a narrower lug pattern. Founded in 1977 by Bill Wood, Wilwood Engineering is based in Camarillo, California. Its disc brake systems and components serve motorsport, street-performance and specialized applications. Calipers, brake rotors, master cylinders, valves, fittings and brake lines are among its products, selected according to the complete brake system’s requirements.
Technical Details
- Manufacturer part number: 120-9690-BK
- Caliper type: Dynapro Single
- Construction: Billet Aluminium
- Finish: Black Powder Coat
- 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: 3.75 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
Measure the receiving bracket and use the published 3.75-inch centers for this exact part. Compare mount height, rotor centerline and pad contact with the drawing. Check the inlet connection, wheel clearance and 1.50-square-inch hydraulic area so that a visually similar DPS is not selected with the wrong mounting or balance.
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.
