Shimano Dura-Ace Fc-R9100 Crankset 165mm, 50X34, W/O BB

Shimano Dura-Ace FC-R9100 Crankset The highest standard for stiffness and lightness. The benchmark for road bike components was set long ago. It was set by Shimano and their Dura-Ace group of components. A group set that has been raced on and proven many, many times over. Yet, they still find improvements and tweaks to keep inching that benchmark further and further towards perfection. The Dura-Ace 9100 Crankset has been redesigned specifically for modern race bikes that are using disc brakes and shorter chainstays. They provide the necessary chainstay clearance without increasing Q-Factor. Stiffer, stronger, 7 grams lighter and perfect for today's modern race bike. NOTE: BB not included Features Accommodates frames with shorter chainstays (410mm) and 135mm rear spacing New designed crank arm maintains high rigidity provides optimum power transfer and reduces weight 4-arm construction crankset Adapted for race specific disc brake system Redesign the gear teeth profile to fit wider gear pitch SPECIFICATIONS Speeds 2x11 Speed BB Compatibility BB-R9100, BB-R9100-PB (not included) Chain Ring Options 50-34T / 52-36T / 53-39T / 54-42T / 55-42T Crank Arm Length 165mm / 167.5mm / 170mm / 172.5mm / 175mm / 177.5mm / 180mm BB Spindle Interface Hollow Tech ll Chainring Material Alloy Bolt Center Diameter (BCD) asymmetrical Crank Arm Material Alloy Chainline 43.5 Intended Use Road Weight 609g (50-34T), 621g (53-39T) | Shimano Dura-Ace Fc-R9100 Crankset 165mm, 50X34, W/O BB