The ARRMA GRANITE GROM MEGA Rear Differential Gear Set by GPM MGG1230RS is engineered with a focus on strength and service life. Key load-bearing parts are 4140 carbon alloy steel while housings and select components use 7075-T6 alloy; the design reflects precision engineering and CNC machined style tolerances for consistent meshing. The spiral cut ring gear aids controlled power transfer, and the large bevel gear (30T) and small bevel gear (12T) receive surface hardening to improve resistance to wear under heavy torque. Differential oil is not included; select and apply oil to tune slip and response based on running conditions.
ARA311193+ARA311182