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Shimano Dura Ace FC-9000
The Shimano Dura-Ace FC-9000 11-Speed Crankset
Arm length: 172.5
Lighter, stiffer four-arm spider design
11-speed-specific shifting ramps
Including: Bottom Bracket SM-BB9000 BST
Integrated Shimano Hollowtech II
The Shimano Dura-Ace 9000 Chainring fits the new 9000 series Dura-Ace crankset which utilizes a 4 arm x-shaped spider and a 110 bolt circle diameter. Shimano makes the 5th arm disappear, shaving some weight, yet still produced the stiffest ring to date. The gain in stiffness comes from Shimano’s Hollowglide Technology and integrated chainring nuts make replacement a very simple task. Chainrings are designed to work together as a set. For crisp and accurate shifting, ensure you are purchasing the correct ring to match your specific tooth count.
Shimano is the bicycle gear components global leader from comfort to performance. Shimano components account for about 50% of the components used on all the bikes manufactured today. Shimano’s component range includes cranksets,brakes, wheels and pedals for road, mountain, and hybrid bikes. Shimano also makes high quality, performance cycling clothing and footwear.