Revolution Gear and Axle D44, 4140 Chromoly US Made Rear Axle Kit for 1987-06 Jeep Wrangler TJ/LJ and 1984-87 Cherokee XJ, 30 Spline with ARB Air Locker.All Revolution, rear axle kits come with the Bearings seals and retainers 100% pressed together and ready to install and are backed by a comprehensive lifetime warranty that covers all failures including bent shafts. Warranty covers axle shaft only. Small parts must be purchased separately. (Note: wheel studs are included in kit but not installed into the axles for safer transport. Install studs using red Loctite and torque to 90Ft-Lbs)