ARRMA Gorgon diff case and idler gear MGO1200A by GPM  [MGO1200A]

Aftermarket 7075 diff case and idler gear assembly

This aftermarket assembly replaces ARRMA part ARA311095 and is supplied as a differential case and idler gear set for ARRMA 1/10 monster and stadium platforms. Machined from 7075-T6 aluminum with a hard anodized surface, the components are intended to improve wear resistance and keep gear mesh consistent under hobby driving loads. It fits as a direct replacement where the factory mounting interfaces and 0.8M gear pitch are used; reference MGO1200A when checking compatibility.

The design emphasises gearbox durability and repeatable engagement rather than altering final drive ratios. In practice the set helps limit wear during heavy use and provides a firmer foundation for setup changes elsewhere in the drivetrain. Install following the vehicle differential layout and use the supplied bearings and fasteners to restore the complete unit.

For ARRMA Gorgon and related 1/10 chassis, MGO1200A provides a like-for-like 7075 alloy differential case and idler gear set intended to restore drivetrain durability and consistent gear engagement; follow the vehicle service manual for torque and assembly order when installing the supplied bearings and fasteners.