Campagnolo 2014 athena black power torque 11 speed chainset the most evident changes are immediately noticed on the first shift the new design of the chain up shift and downshift zones makes shifting extremely fast and precise the axle of athena is the brand new power torque system which makes it possible to obtain very high values of torsional stiffness and efficient power transmission without increasing the lateral bulk forged aluminum cranks light alloy fixing bolts and nuts light