The Japanese company Shimano is a world leader in the production of the highest quality bicycle range. Dura-Ace R9100 is a road group designed for professionals who can accept only the most innovative and reliable components. The FC-R9100-P crankset allows for excellent drivetrain performance and measurement of the power that puts the bike in motion. The 4-arm design is extremely lightweight and ensures optimal performance of the entire system, which runs smoothly, regardless of the type of terrain. Hollowtech II and Hollowglide vacuum technologies have resulted in highly durable arms and sprockets with improved stiffness. The uniform size of the crankset mount allows for easy modifications and proper gear selection. The FC-R9100-P mechanism results in precise chain flipping even under high loads.

The power meter fits perfectly into the excellent design of the cranking mechanism. The reliable electrical system present in this unique design is waterproof and surprisingly durable, making maintenance incredibly easy. The system takes off in the blink of an eye. The high-speed measurement transmission allows power analysis in the present time, without any delay. The accuracy of the measurement is expressed in an extremely low error limit (ą2%). The data is saved in a user-friendly form and sent via Bluetooth and Ant+. Thanks to a system of updates downloaded automatically via Wi-Fi, we can be sure of the latest software version. The integrated battery can be recharged every time from scratch and enjoy longevity. Changing the gears is extremely easy and in no way interferes with the highly stable power measurement system. Resetting the data with a switch on the transmitter is remarkably easy. Strain gauges are located in the left and right crank arms, making it possible to measure separately for both legs. The center of the system is on the cog side.

Dura-Ace

Dura-Ace R9100 is a road group designed for professionals who rely on high quality innovative solutions. The modern technologies used in it have made Dura-Ace one of Shimano's flagship designs.

Hollowglide

Hollowglide is a vacuum technology that allows to give the outer disc a unique lightness. Thanks to ingenious solutions, it increases strength and allows the rigidity necessary for excellent power transmission and fast gear changes.

Hollowtech

Hollowtech complements Hollowglide technology. Together, they allow the strength and lightness of the FC-R9100-P crankset to be emphasized as much as possible.

Crank mechanism highlights:

• 4-arm design
• One mounting size for both crowns (BCD 110 mm)
• Hollowtech II and Hollowglide vacuum technologies
• Chainline: 43.5 mm
• Q-factor: 146 mm
• Adapted for use with 11-speed HG-X11 chain
• External bearing
• Integration of bottom bracket axle with right crankset

Power measurement system highlights

• Waterproof
• Measurement error limit (+/-2%)
• Easy charging of the integrated battery
• Software update system
• Bluetooth and Ant+
• Design integrated with the design of the crank mechanism