TRX4 Rear Gear Box Brass Mounts TRX4013CAX by GPM  [TRX4013CAX]

Precision rear gearbox mounting

These brass rear gear box mounts are engineered for 1/10 TRX4 Trail Crawler platforms to create a solid gearbox-to-knuckle interface and offer selectable damper top positions for tuning pivot geometry and ride height. The design focuses on consistent fitment and incremental adjustability so tuners can refine roll stiffness and damping leverage without redesigning the suspension wave.

Manufactured in brass to increase wear resistance and add rear bias mass, the mounts include multiple positioning holes that permit small lateral offsets of the damper upper mount from the stock vertical alignment. That controlled offset improves lateral stability while enabling measured damper height changes for balanced handling on technical terrain.

Use these CNC-friendly brass mounts to secure the rear gearbox while expanding damper mounting options on 1/10 TRX4 crawlers; the kit provides the hardware required to mate cleanly with the stock rear wavebox and knuckle interface and to support precise tuning adjustments.