10.5 inch GM 14 Bolt 5.38 Rear Ring and Pinion Install Kit 30 Spline Positraction Yukon Gear & AxleYukon Gear & Axle 10. 5 inch GM 14 Bolt, 5. 38 Ratio Rear Ring and Pinion Gear Set and Master Install Kit Package, with 30 Spline Yukon Dura Grip Limited Slip Positraction Details: Rear Differential 10. 5 inch GM Gear Ratio 5. 38 Location Rear Structured Ring and Pinion Install Kit Spline 30 Spline Positraction Yes Warranty Warrantied against manufacturing defects for one (1) year Sold As Kit Features: For Applications with 14 Bolt Rear Cover and 12