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Product details
A side inlet and included center bridge bolt distinguish this anodized DynaPro thin-rotor caliper. Four 1.75-inch stainless pistons operate within the forged body. The nominal 0.38-inch rotor opening belongs to a specific narrow package; the side port changes plumbing access without establishing a vehicle application. 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: 120-9695-SI
- Caliper type: Dynapro Lug Mount
- Construction: Forged Aluminium
- Finish: Type III Anodize
- 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: 0.38 inch
- Rotor thickness limits: 0.25–0.38 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
Check the hydraulic fitting’s approach and clearance to the bracket, suspension and rotor. Match the 0.25–0.38-inch thickness range, 5.25-inch lug pattern and 2.10-inch mount height together. The pad track and wheel envelope must also be confirmed, especially when replacing a caliper with a different inlet position.
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.