The GPM MAKX021 front knuckle arms are specified for the ARRMA KRATON 8S BLX Monster Truck and are produced from 6061 T6 aluminium for consistent stiffness and strength. Integrated POM collars maintain correct bearing positioning to minimise lateral play and lower friction where bearings rotate. The 3D streamline form supports a compact metallic finish while dual tie rod positions permit fine tuning of steering geometry to match handling preferences.