TRAXXAS TRX4 Outer Portal Drive Housing (Front or Rear) - TRX4021A/2 by GPM  [TRX4021A/2]

Aluminum outer portal drive housing for TRX4

This aluminum outer portal drive housing is made for the TRAXXAS TRX4 Trail Crawler platform and acts as a direct replacement for the stock plastic housings on front or rear portal axles. Its main purpose is to stabilize the inner gears inside the knuckle arms and keep gear meshing smoother under crawling loads.

The part is manufactured from 6061 T6 aluminum and CNC machined with a 3D streamlined profile to cut weight while retaining 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 aluminum 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.