The GPM MAKS021 front knuckle arms are precision-engineered for ARRMA KRATON 4X4 4S BLX applications, offering increased structural strength while maintaining accurate steering geometry. Machined from 6061 T6 aluminium for consistent material properties, the arms incorporate POM collars to manage internal clearances so bearings seat reliably. Three tie rod positions provide practical options for steering angle and Ackermann tuning, enabling targeted setup adjustments without additional machining.