Upgrade the rear end of your Traxxas TRX4 with GPM TRX4022B aluminium knuckle arms to improve gear stability and cut down on drivetrain binding. Made from 6061 T6 aluminium and finished via CNC machining, these knuckles give a solid feel and resist abrasion over time. They are a straightforward, durable hardware upgrade for owners who run rocky or technical terrain.
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