Major advantages of upgrading to this part/product: The front differential comes completely assembled and ready to install in your 8s X-Maxx or XRT. Includes: 4140 medium carbon steel differential Bevel Gear 32T/M1.6 , Front Pinion Gear 10T and bearing 15x24x5 , differential Gear set , 4140 medium carbon steel+7075 alloy diff case , 7075 alloy Differential gear spacers , spider gear shafts , Diff Case Gasket
Note: There is no differential oil, it needs to be added by yourself. It is recommended to use differential oil, Front: 20WT=200CST, Rear: 30WT=350CST, Center: 80WT=1000CST