4iiii precision power meter shimano ultegra 6800 grey aluminium 170mm
The 4iiii precision power meter for shimano ultegra 9000 cranks is a pre installed power meter on a shimano ultegra left hand crank arm this allows you to simply replace your left hand crank arm and youre ready to ride available in grey only with a choice of 170mm 1725mm or 175mm crank arm lengths