These GPM hardened steel #45 wheel joints are specified for Traxxas X-MAXX 6S use, featuring a reinforced 1.5mm body and a shaft pin that is 0.5mm thicker than the original component to improve torque transfer and reduce wear under high loads. The outer diameter has been revised from 17mm to 18mm to distribute stresses better and lengthen operational life while maintaining compatibility with X-MAXX driveline geometry.