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. The kit uses tapered roller bearings and new forged hub with the hub upgrade kit. Standard kit uses original hubs.
May not work with some stock wheels.
1947-50 trucks may need to drill out lower spindle hole from 7/16" to 1/2"
Frame mount brake boosters may require 1CP-CP9424 transmission mount
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