Super-smooth, hardened steel 4mm kingpins provide the foundation for the Tweak Free Front Suspension. The kingpins have stronger design with a machined 1.5Ă‚ camber angle machined into the kingpin for precise suspension geometry. Optional 1.0Ă‚ and 2.0Ă‚ camber king-pins are available to adjust the camber in fixed steps.