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Yukon posi spider gear kit for GM 8.5" differentials outfitted with Dura Grip positraction (28 spline) supplies the replacement internal gears and hardware. Built with upgraded materials and production techniques, the kit includes two side gears, two pinion gears, cross pin shaft, roll pin and thrust washers. This set does not include clutches and is intended for Dura Grip applications with 28-spline axles.
Yukon Gear Positraction internals For 8.5in GM w/ 28 Spline Axles
