Traxxas TRX-4 Rear Portal Mount for Tuning — JR-TRX405-BK by Jazrider  [JR-TRX405-BK]

Tuning and Setup for the TRX-4 Rear Portal

This aluminum rear portal drive axle mount is an aftermarket replacement tailored for the Traxxas TRX-4 chassis. Finished in black, it serves as the anchor for the rear portal axle assembly and is intended for model maintenance, repair, or setup adjustments rather than marketing increased speed or power.

Choose this part when you need a metal replacement for a broken mount or when adjusting axle geometry for specific trail or scale setups. Aluminum provides a firm interface that can change how the axle mounts affect ride height and driveline angles, so verify specifications with the seller before ordering.

Practical notes: the part is built to function as a direct rear portal drive axle mount for TRX-4 applications. For tuning work, pay close attention to how the mount changes axle height and pinion engagement; test adjustments progressively and confirm there is no unwanted binding during full suspension articulation.