For severe racers tuned in to weight savings, XRAY’s fresh optional front part middle shaft is CNC-machined from world-renowned HUDY Spring Steel™., and it is strategically lightened by 50percent compared to the standard #335710 front center shaft. The key middle shaft is very wear resistant at contact points, assisting raise the lifespan regarding the shaft bearings. Rotating mass is reduced without having to sacrifice energy or durability.