Shimano Ultegra FC R8000 Crankset 11 Speed HollowTech II has a Beautiful shape and strong power transfer: the Ultegra FC-R8000 crankset by Shimano. The Hollowtech II crankset will help you transfer more power into speed. It offers weight reduction without sacrificing stiffness. It enables a wide range of gear combinations to suit your every need. Paired with the new front and rear derailleurs, your shifts will be so fast and reliable you’ll almost question whether they happened at all! The beautifully shaped crankarm, trickled down from Dura-Ace, is a tribute to the aesthetics of your bike.
INFORMATION Application: Road, Cyclocross Compatibility: Shimano 2x11-speed Chainring Mount: 110 mm bolt circle diameter, 4-arm asymmetrical
SPECIFICATIONS Series: Ultegra R8000 Crankarm Material: aluminium Chainring Material: aluminium / CFRP, aluminium (aluminium only with 36-46) Axle Material: steel Gradation: 34-50, 36-46, 36-52, 39-53 Crankarm Length: 165mm, 170mm, 172.5mm, 175mm Chainline: 43.5 mm Q-Factor: 146 mm Axle Diameter: 24 mm (Hollowtech II) Compatible BSA Bottom Bracket Shell Width: 68 mm Recommended Bottom Bracket: SM-BBR60 or SM-BBR60-PB Pressfit Hollowtech II (not included) Recommended Chain: HG-EV 11-speed, HG-X11 (e. g. CN-HG701-11) Includes Shimano Crank Bolt Weight: 690g (170mm 39-53T)
FEATURES - optimized lightweight crankarm design produces excellent power transfer efficiency - redesigned chainring tooth profiling increases clearance between chain and leading teeth to provide compatibility with frames featuring 135 mm O.L.D. and 410 mm chainstay length - anodized crankarms and chainrings - chainring bolts made of aluminium
Technology: Hollowtech A lightweight crankset not only reduces the bikes weight, but decreases rotating mass to aid in acceleration. The challenge is to reduce the weight of the crank without reducing its strength and rigidity. Shimano’s advanced forging technology has solved the problem tough the Hollowtech crank. Just like the high quality frame tubing, a hollow crank arm can provide amazing strength and rigidity at very low weight.
Hollowtech II The concept of Hollowtech II technology is focused on producing a superior crankset, which will maximize a rider’s power transfer. The rigidity of the crankset ensures pedalling efficiency while its weight, a key element of the crankset, you want light, aids in cycling longer distances over which the rider needs to pedal more. Naturally, Shimano strove for the optimum balance between the conflicting needs of stiffness while producing a lightweight crank. Outboard Bearings: For most frames with 68 mm bottom bracket shells, Hollowtech II with 24 mm axle can set the bearing position outside of the frame to provide better weight distribution and more stability. High Precision Sealing: Hollowtech II cranksets have a high-precision sealing in the bearing area to increase durability maintaining the excellent rotating performance for long periods.
Hollowglide Highly rigidity hollow structure cuts down on weight yet maintains strength. Better power transfer and more precise front shifting.
Original Shimano parts guarantees that all components work perfectly for optimum performance and maximum safety and longevity.
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