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

Steel outdrive for ARRMA GROM and TYPHON differentials

This MGM039S differential outdrive is an aftermarket RC replacement part made for use in ARRMA compact desert truck and buggy differentials. Machined from medium carbon steel, the piece is intended to reduce wear where the outdrive engages the CVD or dogbone shafts and to support steadier rotation of the diff internals without implying any real-vehicle use.

The outdrive installs into the standard differential housing used on the listed ARRMA models and functions to couple the rotating CVD or dogbone to the differential internals. It is a direct replacement for factory part number ARA311193; verify the original orientation and fit before final assembly. For setup, treat this as a toughness-oriented swap that keeps original geometry while improving contact durability.