USA Standard Gear packages provide an easy way to re-gear a four wheel drive vehicle with one simple part number. Fits Jeep XJ and YJ with reverse rotation Dana Spicer 30 front and Chrysler 8.25 inch rear 4.88 ratio Includes front and rear ring and pinion sets and master overhaul kits 1 year warranty against Manufacturer defects Features and Benefits: Fits Jeep XJ and YJ with reverse rotation Dana Spicer 30 front and Chrysler 8.25 Inch rear 4.88 ratio Includes front and rear ring & pinion sets and master overhaul kits Details: Grade Type: Regular Fitment Notes: Dana 30 Front And Chrysler 8.25 4.88 Gear Ratio Application Summary: 1984-2001 Jeep Cherokee (Front, Rear) (Liter: 4.0, 2.5 & Engine(ci): 242, 150 & Cylinder: 6, 4 & Block: L & Bore(in): 3.88 & Bore(mm): 98.4, 98.5 & Stroke(in): 3.43, 3.19 & Stroke(mm): 87.0, 81.0 / Note: Dana 30 Front And Chrysler 8.25 4.88 Gear Ratio) 1987-1995 Jeep Wrangler (Front, Rear) (Note: Dana 30 Front And Chrysler 8.25 4.88 Gear Ratio)