1955 – 1959 Chevy / GMC Front Disc Brake Kit – 6 Lug – With Under Floor Brake Booster

Our 6-lug disc brake kit contains all you’ll need to put modern discs on your stock 1/2 ton spindles, and keep your original pattern. The 1-1/4″ thick, 12″ rotor uses a GM full-floating caliper. The 8″ single diaphragm booster master cylinder and proportioning valve mounts in the stock location.  Some stock wheels may rub the caliper, it may be necessary to use a spacer. May not work with some stock wheels. Also, 1947-50 trucks may need to drill out lower spindle hole from 7/16″ to1/2″.Note: Frame mount brake boosters may require #CP9424 transmission mount.
Note: kit shown with optional upgrade drilled/slotted rotors.