~(21.7 lbs. 13X8X8)~ T10CC GEAR KIT/2.881.911.33

This Motive Gear solid pinion spacer kit is designed for rebuilding GM 12-bolt truck differentials with an 8.875-inch ring gear size. It replaces the factory crush sleeve, providing a more precise and permanent pinion bearing preload setting that won't change over time. The kit includes the solid spacer and a selection of shims, used to dial in the exact pinion depth for optimal gear mesh. It is essential for a strong, quiet, and long-lasting differential setup, especially for vehicles running bigger tires or more power. This part directly replaces OEM-style crush sleeves and is a common upgrade in differential rebuild kits. It is also listed as interchangeable with Yukon Gear part numbers SK CSGM12T. Made from durable steel, it's built to handle torque and is suitable for DIY gear installers, off-road builders, or performance enthusiasts.