TRAXXAS TRX4 Trail Crawler Aluminum Lower Spur Gear Cover Upgrade TRX4038GCB by GPM  [TRX4038GCB]

Aluminum lower spur gear case upgrade

This replacement lower spur gear case cover is intended for the TRAXXAS TRX4 Trail Crawler platform and is made to protect the motor area and main spur gear from impact and contamination while keeping access for routine maintenance.

Made from aluminum 6061 T6, the cover offers superior tensile strength compared to standard plastic covers and forms a rigid shield around the gearbox opening. The kit comes as a 7 pcs set and includes stainless steel round head screws for mounting, listed below. Several finish choices let you match or customise a TRX4 setup.

Installation guidance and role in tuning:

• Mounts in place of the stock lower spur gear case cover to provide a tougher enclosure without changing gearbox geometry.
• The alloy panel helps reduce debris ingress around the spur and motor, which can cut down on wear between the spur and pinion when crawling technical lines.
• Because the part is rigid, check clearance around the motor, pinion gear, and any aftermarket ESC or wiring prior to final tightening to prevent binding.

This GPM aluminum lower spur gear case cover provides a practical metal upgrade for TRX4 rigs that need added protection while preserving factory service points.