Revolution Gear and Axle Discovery Series D44 4140 Chromoly Rear Axle Kit for 07-18 Jeep Wrangler JK, Rubicon 32 Spine kit, fits Factory locker ONLY. All Revolution rear axle kits come with the Bearings seals and retainers 100 Percent pressed together and ready to install and are backed by a comprehensive 10 year warranty that covers all failures.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)