The GPM Aluminium Outer Portal Drive Housing is engineered for the Traxxas TRX4 Trail Crawler, replacing the stock plastic units with a 6061 T6 aluminium component to improve strength without significant weight gain. It keeps the inner gears of the knuckle arms correctly positioned for smoother operation under load and works with the original plastic parts. The housing features a refined 3D contour and accurate machining to ease installation and alignment.
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