Combining reduced weight with optimal stiffness the shimano ultegra fc 6750 compact bicycle chainset features industry leading hollowtech ii crank arms to improve strength and rigidity whilst the larger spacing between the chainrings allow for a broader range of rear cassettes to be used designed to give smooth rolling with increased durability the chainset has teeth which have been developed to work in conjunction with the cn7900 and cn6700 chains for increased contact and optimum power tra