Traxxas TRX-4 Aluminum Portal Drive Housing by JAZRIDER JR-TRX406-GU  [JR-TRX406-GU]

Aluminum outer portal housing for TRX-4

This is an RC-scale replacement outer portal drive housing intended for Traxxas TRX-4 scale and trail crawler models. Finished in gun metal, the part provides a machined aluminum outer shell specified as a front/rear outer portal housing to replace worn or damaged plastic housings while keeping the portal axle geometry of the model.

The component's role is practical: it serves as a durable outer cover for the portal assembly and helps maintain correct wheel offset and axle alignment when used as a direct replacement on compatible TRX-4 portal assemblies. For tuning, it is useful when you want a metal external surface that resists abrasion and matches other aluminium hop-ups on the vehicle.

Installation is straightforward for experienced model technicians: remove the wheel and outer housing per your TRX-4 service routine, swap the aluminum outer shell in place of the original, and secure fasteners to the original clutching or thread engagement. Follow Traxxas factory service guidance for fastener seating and bearing retention, and verify clearances before running.