Allstar Performance 68618 | Shim Kit GM 8.875in 12 Bolt Truck

Allstar Performance shim kit for GM 8.875in 12 Bolt Truck in race car drivetrains. Adjusts gear backlash for precise setup in racing builds. Bolt-on installation for track use.
Sold as one complete kit. This is a complete kit containing all the hard-to-find individual parts for a quick, trouble-free installation. Applications include 1964 to 1982 trucks and blazers. Ring and pinion shim kit fits GM 12-bolt differentials with a 8. 875 inch ring gear.