Dura-Ace moves to the next generation. Tested in competition & taken to victory by pro riders in all conditions including the 2012 Tour de France Team Sky. Cutting edge technology for the ultimate in control & confidence. With a unique four-arm spider & Hollowtech II construction putting strength just where it's needed the FC-9000 chainset sets new standards for stiffness & low weight. Key
Features: New 4-arm design for same stiffness with lighter weight. 11-speed compatible for use with new Dura-Ace 11-speed chain cassette shifters & derailleurs. These industry leading Hollow Tech II cold forged hollow crank arms have been evolved to increase rigidity reduce weight & improve strength. Hollowglide chainrings give incredible rigidity hugely improving shift performance to make it precise even under high load. Hollow Tech II integrated bottom bracket design uses a wider bearing placement & larger axle diameter for increased stiffness & efficiency. Same bolt circle diameter for compact & traditional double chainsets means that one crankarm fits all chainring sizes allowing for unparalleled customisation.