The GPM Aluminium Outer Portal Drive Housing is crafted for the Traxxas TRX4 Trail Crawler and swaps out the original plastic housings for 6061 T6 aluminium to increase durability while keeping weight low. It secures the inner gears inside the knuckle arms, helping maintain gear mesh under heavy trail or crawl use and remains compatible with existing plastic parts. Precision CNC cuts and a 3D streamlined form aid an accurate fit and simple installation.
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