Shimano Ultegra Cycle Bike FC-R8100 Ultegra 12-Speed Double Chainset Grey

The Shimano Ultegra FC-R8100 12-Speed Double Chainset uses HollowTech II 12-speed technology to deliver an ideal balance of lightweight and stiffness, making it the perfect choice for both enthusiasts and competitive riders.Shimano Ultegra FC-R8100 12-Speed Double Chainset FeaturesHollowGlide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, even under high loadThe chainring teeth have been developed to work in co... - Manufacturers part number: IFCR8100DX66

• ■ 2x12 speed crankset from the ROAD Compo "ULTEGRA" series. ■Optimized for rigidity, strength, weight, and rotational performance. ■Hollow Glide construction maintains strength while reducing weight for better power transfer and faster precise front shifting. ■ Front double and rear 12 speeds. Bottom brackets sold separately. FC-R8100 46-36T specifications; Number of teeth configuration: 46/36T; Crank length: 6.3, 6.5, 6.7, 6.9 inches (160, 165, 170, 172.5, 175 mm); Compatible chain: HG 12-speed, PCD: 4.5 mm. Recommended BB: SM-BBR60, SM-BB72-41B; Compatible BB Ciel Width: 2.7 inches (68 mm), 2.8 inches (70 mm)