The Yukon Dura Grip limited-slip re-gear kit brings an upgraded ring-and-pinion and positraction unit to GM 8.5" differentials for improved traction and longevity. Offered in a 4.11 ratio, the kit includes the Dura Grip LSD, ring and pinion, necessary bearings and installation hardware. It fits many GM 8.5" applications, including classic models like the 1970–1996 Chevrolet Caprice and 1970–81 Firebird Trans Am.
Yukon Gear 70-96 Chevrolet Caprice Limited Slip & Re-Gear Kit - 8.5in Diff 28 Spline 4.11 Ratio