SK axles are made from seamless cold drawn steel for better wall thickness consistency and axial flex characteristics, and finished using the finest centerless grinding techniques. There is no straighter axle anywhere. Axles are engraved with letters representing the grade for easy organization.
SK REAR AXLE Diameter 40mm KEY TECHNICAL FEATURES:
SK 40mm axles are available in three grades, listed below with their respective wall thicknesses and the letter engraved on them: