TRAXXAS TRX4 Upper Spur Gear Transmission Cover Aluminum TRX4038GCA by GPM  [TRX4038GCA]

Aluminum Upper Spur Gear Case Guard

This aluminum upper spur gear case cover is an RC-scale replacement part for the TRAXXAS TRX4 Trail Crawler platform. It adds a stiff metal shield over the transmission opening to reduce direct impacts to the motor and main (spur) gear while limiting dust and debris intrusion on trail runs.

Fitment keeps the gearbox opening alignment using the stock mounting points and hardware. The package includes three stainless steel round head screws to secure the cover; hand-start the screws and use modest torque to avoid stripping threads in receivers or plastic mating surfaces.

Install this metal cover as a durable alternative to the stock plastic upper cover when running rocky or dusty terrain. Verify clearance around nearby suspension links and body mounts before final tightening to prevent interference with standard TRX4 components.

This practical aftermarket cover gives TRX4 owners a metal upgrade for the transmission area; confirm fit and correct fastener torque during installation to protect gearbox alignment and motor clearance.