This replacement drivetrain assembly is manufactured for TRAXXAS large-scale models and listed under XRT13KIT from GPM. It pairs the rear differential with its housing and upper bulkhead to address the increased stresses seen on 1/5-1/6 scale off-road trucks during heavy use and repeated landings.
Notable construction details include 4140 carbon steel differential gears that have been heat-treated for improved torsional capacity and wear life, together with CNC-machined 7075-T6 aluminum housings and bulkhead to maintain rigidity without excessive weight. The bevel gear count is specified as 32T with a 10T pinion and module M1.6, which is useful for matching spare gears and service parts.
Service notes: the assembly is intended as a bolt-on replacement where chassis compatibility exists. When installing or servicing, check the bearing sizes, gasket orientation and gear mesh; adjustments to preload or lubricant should be validated to ensure reliable engagement under high loads.
GPM XRT13KIT is offered as a heavy-duty aftermarket solution for the listed TRAXXAS trucks, targeted at hobbyists and technicians who prioritise drivetrain strength and consistent handling under repeated heavy impacts.
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