GPM Racing Hardened Steel #45 Front or Rear Wheel Joints for 6S - 2pcs Set for Traxxas 1/5 X-MAXX 6S (STXM039)

High-strength wheel joint for X-MAXX driveline upgrades

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.

Specifications

• Item: Harden Steel #45 front or rear wheel joints, 2 pcs set
• Material: Hardened steel
• Model Number: STXM039
• Design Details: CVD body 1.5mm thickness, shaft pin +0.5mm thicker, outer diameter upgraded 17mm→18mm
• Compatibility: TRAXXAS X-MAXX, 6s setups

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.

What structural benefits come from the 1.5mm CVD body?

Increasing the CVD cross-section raises bending stiffness and helps distribute contact stresses more evenly across the joint under high torque.

How does the +0.5mm shaft pin change failure modes?

A larger pin increases shear area and reduces localized stress, lowering the likelihood of plastic deformation under repeated peak loads.

Any fitment checks recommended after installation?

Confirm hub engagement, verify axle runout, and check that the increased OD does not interfere with neighbouring components before high-power testing.

What maintenance practices extend service life?

Regular inspection for wear, periodic cleaning and light corrosion protection, and checking pin retention torque will help maintain performance. Write Product Review Please sign in your account before you can write any review. Sign In Close

Made to order: GPM Racing parts are shipped to us from GPM’s factory, so please allow around 14 days for dispatch.