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Product details
This red left-rear CPB carries the factory Position 1 designation and combines hydraulic stopping with mechanical parking hold. A single 34 mm stainless piston is protected by a dust boot in the floating body. It is a nominal 0.81-inch rotor-width component for a rear brake assembly built around the correct radial bracket. 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: 120-9809-1-RD
- Caliper type: Combination Parking Brake
- Construction: Aluminium / Steel
- Finish: Red Powder Coat
- Piston bores: 1.34 inches
- Piston type: Steel
- Piston count: 1
- Published piston area: 1.41 square inches
- Dust boots: Yes
- Nominal rotor width: 0.81 inch
- Rotor thickness limits: 0.75–0.81 inches
- Rotor diameter limits: 11.00–13.00 inches
- Mounting style: Radial
- Mounting side: Left Hand
- Mounting centers: 5.98 inches
- Mounting-hole size: 0.39 inch
- Mount height: 2.08 inch
- Hydraulic inlet thread: M10 x 1.00
- Required pad shape: D340
- Published pad area: 4 square inches
- Published pad volume: 1.5 cubic inches
- Manufacturer-listed component weight: 6.1 lb
Fitment & Compatibility
Check the exact rear kit or existing caliper identity to establish whether Position 1 is required. Do not infer a particular angle from the designation. Compare rotor width, offset and pad sweep, then verify cable termination and lever clearance, hydraulic fitting position and available wheel space before installation.
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.