The GPM TXM022 rear knuckle arms are CNC focused upgrades that strengthen the TRAXXAS X-Maxx rear hub area and reduce deflection under load. Built from high quality aluminium with attention to fit and finish, these knuckles improve rear steering accuracy and support consistent suspension geometry when tuning for different tracks. They are intended as a robust replacement for worn or fragile stock components, helping to extend service intervals and maintain predictable handling.