TRAXXAS XRT 8S Front & Rear Complete Diffs and Upper Bulkhead Kit by GPM XRT1213KIT  [XRT1213KIT]

Front & Rear Diffs and Upper Bulkhead Kit

This GPM aftermarket kit replaces the factory front and rear differential assemblies and upper bulkheads on TRAXXAS XRT 8S platforms. The differential bevels and pinions are machined from 4140 carbon steel with heat treatment for improved torsional strength and wear resistance. Housings and the front/rear upper bulkheads are CNC machined from 7075-T6 aluminum to increase rigidity while keeping weight reasonable. The kit is intended for RC-scale heavy-load and repeated-jump operation, providing a direct-fit upgrade that focuses on drivetrain durability and predictable handling under load.

Key drivetrain details supplied with the kit include a 32T diff bevel gear, 10T pinion gears, and components manufactured to module M1.6. Bearings and gaskets required for the assembled differentials are included in the package to facilitate swap-in replacement of the factory units. The design purpose is to stabilize differential behavior during high torque bursts and to reduce wear on plastic factory gears by substituting hardened steel and alloy housings where the load is concentrated.

For builders focused on longer-term drivetrain robustness on 1/5 and 1/6 TRAXXAS heavy-hobby platforms, this GPM kit offers a material upgrade path that targets high-stress areas without changing vehicle geometry, making it suitable for users who prioritize durability and straightforward drivetrain tuning.