Shimano's R9100 series crankset achieves the ultimate in optimal power transfer. It does this through its broader Hollowtech II arm and a more reinforced outer chainring on its unique asymmetrical four-arm spider construction. The R9100 cranks set the highest standards for stiffness and lightness. With the first integrated power meter, you can expect extremely accurate data. The FC-R9100-P is Shimano’s first power meter, as well as Shimano’s first crank-integrated power meter on the market. It retains its unique asymmetrical four-arm spider construction, but with a ‘brain’ mounted on the inside. On its crank arm are the strain gauges. Working perfectly in sync with each other, you can use the extremely precise power data to improve your performance. - Accurate real time data - Compatible with 3rd party displays - Bluetooth / ANT technology - Hollowtech II construction - Hollowglide chain - 11-speed compatible - Waterproof in all conditions - ±2% accuracy of strain gage measured power - Integrated rechargeable battery - Simple zero reset with switch on transmitter - Average weight (170mm, w/o BB): 691 grams (53-39T)/679 grams (50-34T)
Shimano Ultegra R8000 crankset. - Optimized lightweight crank arm design produces excellent power transfer efficiency - Minimized weight without sacrificing stiffness - Hollowtech II - Rider tuned gear performance through various gear combinations - Possible to choose the best choice for ride - Redesigned FC for greater frame compatibility - Wider gear pitch increases clearance between chain and leading teeth to provide compatibility with frames with O.L.D. 135mm and 410mm chain stay length - Model Number : FC-R8000 - Series: Ultegra - Crank Construction: Hollowtech II - Crank Arm Length : 165, 170, 172.5, 175mm - Bottom Bracket : SM-BBR60/SM-BBR60-PB - Chain Line: 43.5 - Average Weight: 690 grams (53-39T), 681 grams (52-36T), 674 grams (50-34T), 668 grams (46-36T)
$173.99 - $199.99
For maximum pedaling efficiency, Shimano's 105 Crankset boasts light, stiff hollow cold forged aluminum arms, plus an integrated oversize-steel axle. The chainrings are also made of cold-forged aluminum and are ramped and pinned for quick, precise shifting. The asymmetrical, four-armed big chainring provides incredible power transfer.
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