Fit the GPM differential set to improve long term durability in your ARRMA GRANITE. Components are made from 4140 carbon alloy steel with 7075-T6 aluminium alloy housings and include a spiral cut ring gear to aid torque transfer. Both the 30T large bevel and the 12T front small bevel are surface hardened to handle repeated high-load use. The differential comes fully assembled with bearings and is a direct swap for factory items (#ARA311193 + #ARA311182). Differential oil is not supplied; consult the ARRMA manual for the correct oil grade and fill method.
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