SHIMANO JG.BIE/PL.SH.Dura Ace 110BCD 170 50x34 2x12V Car Cranksets, Sport, Black (Black), One Size

The HollowTech II 12-speed Dura-Ace chainset offers the optimum balance of light weight and rigidity, making it the global choice for road racing's elite ridersHollow outer chainring, giving vast improvements in rigidity and increased weight savingsThe hollow outer chainring has essentially removed outer chainring flex, hugely improving shift performance making it precise even under high loadThese industry leading HollowTech II 4 arm cold forged hollow crank arms have been evolved to increase rigidity, reduce weight, and improve strengthThe teeth have been developed to work only in conjunction with the 12-speed chains for improved contact providing more efficiency and improved power transferThere is a wide range of chainring ratios and crank arm lengths available enabling customisation for all riders and racing disciplinesHollowTech II integrated bottom bracket design uses a wider bearing placement and larger axle diameter for increased stiffness and efficiencyBottom bracket seal design has a minimal bearing interface gives superbly smooth rolling and increased durability

The optimized design of the crank arm ensures a power transfer. Transfer your pedaling effort to the transmission. Ensures the fastest and most accurate front shift available. Ensures light weight. Offered in even shorter crank arm lengths to offer adjustment options for any rider.