Lighter, stiffer, more precise and easier to maintain - the strengths of the 180 hub are further enhanced with the new RATCHET EXP technology. The ultra-reliable freehub system transfers the highest pedaling loads resulting in direct power transmission. Smooth-running SINC Ceramic bearings bring a decisive advantage with their extremely low rolling resistance. DT Swiss 180 hubs - the ultimate in lightweight, stiffness and durability.