The Yukon Carrier Installation Kit for GM 8.5-inch rears with aftermarket positraction includes carrier bearings, races and a "super" carrier shim kit and is compatible with heavy-duty bearing setups. It’s intended for installers swapping carriers or fitting aftermarket posi units without a full overhaul. The kit provides the essential bearings and shims required to correctly set carrier preload and mesh in GM 8.5 applications.
Yukon Gear Carrier installation Kit For GM 8.5in Diff w/ HD Bearings