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

Performance and tuning notes

This GPM kit is an aftermarket replacement set that pairs complete front differentials with an upper bulkhead and differential housing for TRAXXAS XRT and X-Maxx machines. The package is aimed at pilots who push large-scale electric monster trucks with high torque and frequent landings.

Internal gearing is 4140 carbon steel with heat treatment to improve torsional strength and wear resistance. The diff uses a 32T bevel gear and a 10T front pinion gear with module M1.6 as listed in the source specifications. Housings and the upper bulkhead are CNC machined from 7075-T6 aluminum to increase stiffness while keeping handling characteristics manageable.

Fitment is intended as a direct replacement for factory front components on the models shown below, providing a more durable drivetrain assembly rather than changing the vehicle's intended steering or suspension geometry.

For tuners and aggressive drivers using large TRAXXAS platforms, this GPM kit supplies robust 4140 steel gears and rigid 7075 housings to better cope with high-impact running.