ARRMA Granite Grom Mega GPM MGG1230FR Spiral-Cut Differential Set  [MGG1230FR]

Spiral-Cut Steel Differential for ARRMA Grom Mega

Fit the GPM Medium Carbon Steel Differential Gear Set to your ARRMA 4WD to sharpen power transfer and reduce roughness in the gearbox. The spiral cut ring gear evens torque flow across the drive train and lowers noise for smoother runs.

Packing includes

• Diff Bevel Gear 30T - 2pcs
• Front Pinion Gear 12T - 1pcs
• Rear Pinion Gear 12T - 1pcs

Original Name / Part No:

• ARA311177, ARA311182

The spiral tooth profile encourages consistent torque split while turning, helping the vehicle track more predictably. Tighter meshing reduces vibration and audible gear chatter, which helps protect both the differential and the rest of the transmission. Heat treatment plus blackening increases wear resistance for extended running between rebuilds.