TRAXXAS XRT/X-Maxx Front Complete Diffs & Upper Bulkhead XRT12KIT by GPM  [XRT12KIT]

Front diffs and upper bulkhead overview

This GPM kit is an aftermarket RC-scale replacement set designed for TRAXXAS XRT and X-Maxx platforms, combining complete front differentials with an upper bulkhead and differential housing. The parts are intended to strengthen drivetrains exposed to heavy loads and repeated jumps on large-scale electric monster trucks.

The differential internals use 4140 carbon steel with heat treatment for improved torsional strength and wear resistance, featuring a 32T diff bevel gear and a 10T front pinion gear with module M1.6 as specified by the original source. The housing and upper bulkhead are CNC machined from 7075-T6 aluminum to increase rigidity while keeping weight reasonable for RC handling.

Installation is intended as a direct replacement for the factory front assembly on compatible models listed below. The kit’s role is primarily to provide a more durable drivetrain assembly for aggressive off-road use, rather than change vehicle geometry or handling characteristics.

For builders seeking a direct-replacement front drivetrain option for large TRAXXAS models, this GPM kit offers 4140 steel gearing and 7075 aluminum housings to address durability demands in heavy-duty RC operation.