Front/Rear Differential Set for Kraton 6S/Big Rock 6S (ARA311199)

Front or Rear Open Diff Set for GP4-equipped ARRMA vehicles, factory-assembled and pre-filled with 80k cSt silicone oil for fast, efficient servicing.

Inside, it features a 43T GP4 spiral-cut main gear and steel internal gears, housed in a durable composite diff case with an integrated steel insert, plus metal cross shafts and rubber shielded bearings for durability and smooth operation. The open-differential design delivers straightforward, predictable action, a setup commonly favored on the rear axle for balanced handling under extreme loads.