These GPM ER2021 knuckle arms bring CNC machined precision to the Traxxas E-REVO VXL steering assembly. Machined from 6061 T6 aluminium and paired with POM collars for exact bearing seating, the design focuses on stiffness and consistent alignment under load. Delrin lock nuts reduce long term wear, and multiple positioning holes enable fine tuning of tie rod length and knuckle geometry to suit setup goals. The components are finished with a metallic anodised surface for corrosion resistance and a professional appearance.