TRAXXAS TRX4 Portal Drive Housing Upgrade (6061 T6 Aluminium) TRX4021A/2 by GPM  [TRX4021A/2]

Aluminium outer portal drive housing for TRX4

This aluminium outer portal drive housing is intended for the TRAXXAS TRX4 Trail Crawler platform and replaces the stock plastic housings on front or rear portal axles. It is tasked with stabilising the inner gears within the knuckle arms to maintain smoother gear engagement under load.

Constructed from 6061 T6 aluminium and CNC machined with a 3D streamlined form, the part aims to reduce weight while retaining tensile strength. It is engineered for straightforward installation with the original plastic components adjacent to the housing so significant chassis modification is not expected for fitment.

Supply information indicates the component is provided as a 36pcs set and that stainless steel cap head screws are included for assembly, 32 pcs. The item is offered as an RC-scale accessory to boost durability and gear stability for trail and rock crawling applications.

Install this aluminium housing when you require a firmer, more dimensionally stable outer portal case to reduce slop in the knuckle arm gears and preserve smoother operation during technical crawling.