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

TRX-4 Portal Housing Upgrade

This JAZRIDER 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 serves as the external outer housing for portal axles, intended to replace the stock outer portal housings on compatible TRX-4 scale and trail crawler builds.

The housing is described as heavy duty brass, which provides a stiffer, durable replacement where users require a metal outer shell. As a scale accessory, it affects how the portal assembly mounts to the axle and can be part of durability or appearance upgrades on both front and rear corners of the chassis.

Installation notes: this unit replaces existing outer portal housings and should be fitted to the corresponding portal gear assembly on the TRX-4 chassis. Check thread engagement, mating surfaces, and clearance with brake and suspension link mounting points before full reassembly. Use appropriate fasteners and verify gear mesh after installation to avoid premature wear.

As a scale upgrade, the brass outer portal housing is suitable for builders wanting a metal replacement for stock housings; confirm fitment with your TRX-4 portal assemblies and inspect clearances during installation.