Here you can see one of the new steering knuckles (on right) pictured next to the stock unit. The stock hub and bearing assemblies are simply transferred from the stock knuckle to the new knuckle. Rancho says that the new CNC-machined cast-ductile-iron knuckles are the industry's highest quality design. Because of the way they're designed, no modifications are necessary to the steering system with this kit. Rancho says that this not only eliminates installation steps, but also maintains the OE steering integrity.