ARRMA GRANITE GROM MEGA 30/12T Diff Gear Set GPM MGG1230F Performance Upgrade  [MGG1230F]

Heavy Duty Carbon Steel Differential for ARRMA

Upgrade your ARRMA GRANITE GROM MEGA with the GPM MGG1230F carbon steel differential gear set to strengthen overall drivetrain behavior. The spiral cut ring gear produces a more even torque flow, helping the truck feel more predictable through turns.

Packing includes

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

Original Name / Part No:

• ARA311177
• ARA311182

Smoother Meshing with Spiral Cut

Compared with straight cut teeth, spiral cut gear teeth engage smoothly, cutting noise and vibration. This smoother contact lowers stress spikes that can accelerate wear on gear teeth and bearings.

Higher Transmission Efficiency

By increasing the working contact area between teeth, the spiral cut ring gear helps reduce energy loss in the gears, improving throttle response and efficiency when towing or climbing rough terrain.

Durability Through Surface Treatment

Heat treatment and blackening boost surface hardness and wear resistance, enabling the gears to tolerate repeated loads and extend the expected operational life of the differential.