Allstar Performance 68631 | Shim Kit Mopar 8-3/4 w/489 Casting

Allstar Performance shim kit for Mopar 8-3/4 with 489 casting in race car drivetrains. Adjusts gear backlash for precise setup in racing builds. Bolt-on installation for track use.
Ring and pinion shim kit fits Chrysler 8-3/4 inch 'pig' differentials with a 1-7/8 inch tapered pinion bearing for the '489' casting and fits most 1969 to 1973 models. Sold as one complete kit. This is a complete kit containing all the hard-to-find individual parts for a quick, trouble-free installation.