ARRMA 1/16 MOJAVE GROM / 1/14 TYPHON Diff Outdrive MGM039S by GPM  [MGM039S]

Aftermarket diff outdrive for ARRMA vehicles

The MGM039S outdrive is an aftermarket replacement component intended for ARRMA compact desert truck and buggy differentials. Machined from medium carbon steel, it is designed to improve wear characteristics where the outdrive meets the CVD or dogbone shafts and to aid smooth differential rotation.

The part fits the standard differential housings used on the listed ARRMA models and couples the rotating drive shafts to the diff internals. It replaces factory part ARA311193; always verify fit and orientation against the original part before completing the installation. This swap is targeted at durability improvements while keeping original geometry intact.