This aftermarket kit replaces the factory front and rear differential assemblies and upper bulkbacks on TRAXXAS XRT 8S vehicles. The bevel gears and pinions are machined from 4140 carbon steel with heat treatment to improve torsional strength and wear resistance. Housings and the upper bulkheads are CNC machined from 7075-T6 aluminum to raise rigidity while keeping overall weight reasonable. The design targets heavy-load, repeated-jump RC use and offers a direct-fit upgrade aimed at improving drivetrain durability and predictable handling under load.
Key drivetrain components included are a 32T differential bevel gear, 10T pinion gears, and parts manufactured to module M1.6. Bearings and gaskets needed for the assembled differentials are supplied to enable a swap-in replacement of the factory units. The hardened steel gears and alloy housings stabilise differential behavior during high torque bursts and reduce wear on the original plastic gearset where loads concentrate.
For builders who want longer-term drivetrain robustness on 1/5 and 1/6 TRAXXAS heavy-hobby platforms, this kit provides an all-metal upgrade path focused on the highest-stress areas without altering vehicle geometry, making it a practical choice for durability-minded tuning.
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