This 2 pcs set is an aftermarket wheel joint engineered for TRAXXAS X-MAXX applications using 6s power. The part is produced as a replacement-style component to raise driveline rigidity and provide a firmer axle-to-wheel interface under elevated torque conditions.
Key engineered changes versus the original joint are explicit: the CVD body cross-section is 1.5mm thick to increase stiffness, the shaft pin diameter is +0.5mm to boost shear capacity, and the outer diameter is increased from 17mm to 18mm to enlarge bearing area for improved rear power transfer. These dimensional choices target reduced deflection and more consistent contact loading while maintaining mating geometry.
Installation follows standard wheel-joint replacement procedures for X-MAXX models. This component is intended as a tuning and durability upgrade for drivers focused on drivetrain performance; verify alignment, clearances, and hub engagement during fitting and test under light load prior to full operation.
As a precision upgrade, STXM039 targets increased driveline stiffness and improved load distribution for TRAXXAS X-MAXX 6s setups while retaining stock-style fitment and serviceability.