Traxxas TRX-4 Outer Portal Drive Housing Heavy Duty Brass - JR-TRX406-HD by Jazrider  [JR-TRX406-HD]

TRX-4 Portal Housing — Heavy Brass Option

This JR-TRX406-HD front/rear outer portal drive housing is a scale RC replacement part manufactured in brass for use on Traxxas TRX-4 models. It is intended as the external outer shell for portal axles and replaces the stock outer portal housings on compatible TRX-4 scale and trail crawler builds.

The component is described as heavy duty brass, providing a stiff, wear-resistant shell where builders want a metal exterior. As a scale accessory, it changes how the portal assembly interfaces with the axle and is commonly chosen for durability and appearance upgrades at both front and rear corners of the chassis.

Installation notes: this unit replaces the existing outer portal housings and must be fitted to the matching portal gear assembly on the TRX-4 chassis. Verify thread engagement, mating surfaces, and clearance around brake mounts and suspension links before final assembly. Use correct fasteners and recheck gear mesh after installation to prevent premature wear.

For builders seeking a metal substitute to the stock portal shell, this brass outer housing offers increased rigidity; always confirm fit with your TRX-4 portal components and inspect clearances during fitting.