ARRMA Gorgon Mega differential case and idler gear by GPM MGO1200A  [MGO1200A]

MEGA-series alloy diff case and idler gear

This GPM aftermarket assembly replaces ARRMA part ARA311095 and is built as an RC-scale differential case and idler gear set intended for ARRMA 1/10 monster and stadium platforms. The kit uses CNC-machined 7075-T6 aluminum with a hard anodized finish for wear resistance and consistent mesh under hobby driving loads. It is offered as a direct-fit replacement for the factory unit where the same mounting interfaces and 0.8M gear pitch are required.

The component set focuses on gearbox durability and repeatable gear engagement rather than altering final drive ratios. In practical RC tuning it serves to reduce wear in high?stress running and to provide a firmer base for setup changes elsewhere in the drivetrain. Installation follows the vehicle’s existing differential assembly layout and uses the supplied bearings and fasteners to restore a complete unit.

For hobbyists maintaining ARRMA Gorgon and related 1/10 platforms, this GPM MGO1200A replacement provides a like-for-like 7075 alloy diff case and idler gear set intended to restore drivetrain durability and consistent gear engagement; follow the vehicle service manual for torque and assembly sequence when installing the supplied bearings and fasteners.