Wilwood Right Rear Black CPB Position 1 Caliper, 34 mm Piston and 0.81-Inch Rotor Width

SKU: 120-9808-1-BK

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Fitment questions?

Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.

Product details

This black right-hand CPB is the factory-designated Position 1 version of the 34 mm combination caliper. It uses hydraulic pressure for service braking and a mechanical cable for parking hold. The rotor opening is nominally 0.81 inch, with the sliding body carried on a fixed radial bracket. 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: 120-9808-1-BK
  • Caliper type: Combination Parking Brake
  • Construction: Aluminium / Steel
  • Finish: Black 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: Right 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

Confirm that Position 1 is the version required by the installed rear brake package before ordering. The designation is retained without assigning an unverified clocking angle. Check rotor width and offset, the 5.98-inch mounting centers, cable approach and hydraulic fitting against the exact application drawing; general CPB dimensions alone do not distinguish the Position 1 configuration.

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.