Traxxas TRX-4 Outer Portal Drive Housing Upgrade, Machined Aluminum - JR-TRX406-BK by Jazrider  [JR-TRX406-BK]

This is an RC-scale replacement outer portal drive housing designed for Traxxas TRX-4 vehicles and offered by JAZRIDER as model JR-TRX406-BK. The part is presented as a front/rear outer portal housing in black aluminum intended for scale and trail crawler applications where metal housings are preferred over the stock plastic components.

Choose this housing when you need a firmer mounting face for axle and portal assemblies or to replace a broken plastic outer cover. The aluminum construction reduces flex at the portal mounting face and helps maintain axle alignment under load, which is useful when fitting heavier axle upgrades or aftermarket portal gears.

Basic installation notes: remove the wheel and detach the existing outer portal housing according to your TRX-4 disassembly procedure, transfer any internal bearings or seals from the original part if required, then fit the JAZRIDER aluminum housing and secure with the original hardware. Verify driveline alignment and free rotation before final tightening. Standard hand tools such as a hex driver set are typically sufficient.

Tuning role: this component serves as a durable structural upgrade, stabilizing the portal assembly and reducing movement that can lead to premature wear on axle shafts and bearings. It is intended to work alongside typical scale upgrades like reinforced driveline components and upgraded shocks.