Electroless nickel plating improves corrosion and wear resistance! The axle shaft is an important component for the improvement of handling stability. The axle shafts are the first to be subjected to various forces during driving, such as impact from the tires, bending stress during banking, and shear force during braking. If you have replaced the tires, wheels, and suspension with aftermarket parts, it is necessary to replace the shafts in order to get the best performance. SCM440H chromium molybdenum steel is machined to high precision by in-house NC machines to provide durability, high rigidity and flexibility.