The most evident changes are on the first shift the newly designed chain up and down shift zones make shifting extremely fast and precisethe new power torque system axle makes for high values of torsional stiffness and efficient power transmission without increasing lateral bulktechnical specificationsfull carbon uni and multi directional crankslight alloy fixing nuts and boltslight alloy chainringschainrings with xpss extreme performance shifting systemchainrings with hard anodization tr