This kit dramatically improves traction and durability by adding a Yukon Powr Lok LSD and an upgraded ring and pinion set to your diff. It?s also an opportunity to generate next-level acceleration by moving to a more aggressive gear ratio.
Features
Fits Chrysler 8.75" differential w/ 42 case housing10 spline pinion gear3.55 ratioIncludes Powr Lok positraction LSDCoverage includes ?70 to ?73 Challenger, ?68 to ?73 Road Runner, ?64 to ?73 Barracuda, 19 other models, or anything hot-rodded with a Chrysler 8.75"/42 housing diff12 bolt ring gearIncludes positraction unit, ring and pinion gear set, and all required bearings and installation hardware