Tamiya OP-1471 TA06 Steel Gear Differential Unit (Rear) 54471 [Parts useful for improving RC car performance and setting] This set includes metal bevel gears (2 large, 4 small), an aluminum cross shaft, and cup joints. The durability and high strength unique to metal gears are attractive features. Furthermore, using 0.3mm thick shims ensures a smooth differential effect for a long time. [Basic Specifications] Set includes metal bevel gears (2 large, 4 small), aluminum cross shaft, and cup joints. Applicable: BB-01, TA06PRO, XV-01, M-07, M-08 *For FF-03 chassis and FF-03 PRO chassis... Usable with cars equipped with 54398