TRAXXAS TRX4 Trail Crawler Aluminum Outer Portal Drive Housing (Front Or Rear) by GPM TRX4021A/2  [TRX4021A/2]

Aluminum outer portal drive housing for TRX4

This aluminum outer portal drive housing is designed for the TRAXXAS TRX4 Trail Crawler platform and serves as a direct replacement for the stock plastic housings on front or rear portal axles. Its primary role is to stabilise the inner gears inside the knuckle arms and maintain smoother gear meshing under crawling loads.

The part is manufactured from 6061 T6 aluminium and machined with a 3D streamlined profile to reduce weight while keeping tensile strength. It is engineered for plug-and-play installation with the original plastic components adjacent to the housing so no major chassis modification is required for fitment.

Supply details from the source list this item as a 36pcs set and note stainless steel cap head screws are included for assembly, 32 pcs. The component is intended strictly as an RC-scale accessory for improved durability and gear stability on trail and rock crawling setups.

Use this aluminium housing when you need a stiffer, more dimensionally stable outer portal case to reduce play in the knuckle arm gears and support smoother operation during technical crawling.