ARRMA 1/16 MOJAVE GROM & 1/14 TYPHON - Differential Outdrive MGM039S by GPM  [MGM039S]

Aftermarket diff outdrive for ARRMA Grom and Typhon

The MGM039S diff outdrive is an aftermarket RC-scale replacement designed for ARRMA compact desert trucks and buggies. Fabricated from medium carbon steel, the component aims to reinforce the interface between the outdrive and the CVD or dogbone shafts, promoting smoother diff rotation under load.

It fits into the standard differential housings used by the listed ARRMA models and performs the role of coupling the rotating drive shafts to the internal gears. This part replaces factory item ARA311193; confirm orientation and clearance against the original piece before completing the installation. Consider this swap when seeking improved toughness without changing stock geometry.