Fit the GPM Aluminum Outer Portal Drive Housing to your Traxxas TRX4 to stabilise the inner gearset on both front and rear knuckles. Manufactured from 6061 T6 aluminium, it provides a stiffer, lighter option over stock plastic pieces while remaining compatible with the original components. The streamlined 3D form is designed for an easy, plug-and-play replacement that keeps gear meshing smooth under load.
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