The Wilwood Combination Parking Brake (CPB) Hydra‑Mechanical caliper combines hydraulic braking and a mechanical parking lock to support drum‑to‑disc conversions and rear disc upgrades on axles not suited for internal shoes. This left‑hand caliper, in red, features a 41mm piston and is intended for roughly .81‑inch rotors, helping maintain balanced rear bias with front brake improvements.
Wilwood Caliper-Combination Parking Brake-Pos 13-L/H-Red 41mm piston .81in Disc