Wilwood 120-10113-13-BK CPB Hydra-Mechanical Combination Parking Brake Caliper Black Piston Disc - 41mm 81

The Wilwood CPB (Combination Parking Brake) Hydra-Mechanical Caliper delivers a dual-function braking solution, using hydraulic pressure for service braking and a cable-actuated mechanical locking mechanism for parking brake duty. This redesigned caliper opens up practical options for drum-to-disc brake conversions and rear disc upgrades on axles where internal shoe-style parking brake systems are not feasible.

Key Features:

• Single-piston floating design with a 41mm bore for consistent, centered pad-to-rotor contact
• Radial mount bracket attachment provides nearly unlimited positioning flexibility — axle flange brackets can be configured at any height within the compatible rotor diameter range or any lateral position relative to the hat and rotor offset
• Floating mount design maintains perfect caliper alignment when the mechanical parking brake lock is engaged and released, and prevents excessive pad knock-back on C-clip rear axles with measurable side play
• Compatible with rotor diameters from 11.00" to 13.00" and designed for 0.81" wide discs
• Position 13 — Right-Hand (R/H) caliper orientation
• Black powdercoat finish for a clean, corrosion-resistant appearance
• Parking brake arm is pre-set to the 1 o'clock position
• Cable connection uses a 1/2" housing end on the stop bracket and accepts a 1/8" to 9/64" cable with a crimped or welded ball end
• Compatible with select OE parking brake cables; aftermarket cable ends available for custom installations
• Sold individually

When paired with a correctly proportioned rotor, the CPB caliper delivers balanced brake bias and consistent performance as part of a complete rear disc brake upgrade. Self-centering pad wear keeps the caliper properly aligned over the rotor throughout the life of the pads, reducing uneven wear and maintenance intervals. The radial mount design and broad rotor diameter compatibility make this caliper a versatile choice for street rods, custom builds, and performance rear axle conversions.