TRAXXAS Rear Differential & Upper Bulkhead Kit XRT13KIT by GPM  [XRT13KIT]

Product summary and purpose

This aftermarket drivetrain kit is supplied for TRAXXAS large-scale trucks and identified by the model XRT13KIT from GPM. It groups the rear differential, differential housing and upper bulkhead to provide increased robustness for 1/5-1/6 scale off-road vehicles subjected to heavy loads and repeated impacts.

Materials noted in the source include 4140 carbon steel for the differential gears with heat treatment for torsional strength and wear resistance, and CNC-machined 7075-T6 aluminium for the differential housing and upper bulkhead to maintain stiffness while controlling weight. The bevel gear is shown as 32T with a 10T pinion and module M1.6, useful when selecting spare gears or scheduling maintenance.

Installation guidance: the assembly is designed to replace factory rear diffs and related housings on compatible chassis. When servicing, verify bearing sizes and gasket placement from the parts list and confirm gear mesh and preload after changing lubricants or bearings to ensure reliable engagement under heavy use.

The GPM XRT13KIT serves as a heavy-duty aftermarket replacement aimed at extending drivetrain life and providing predictable behavior for TRAXXAS large-scale trucks under demanding off-road conditions.