With several years of development & working closely with professional teams you can expect extreme accuracy from Shimano's first fully integrated power meter Hollow Tech II 11-speed Dura-Ace chainset.

Features: Accurately calibrated strain gauges are integrated inside both left & right crank arms, this provides a stable measurement system through rotation from both sides for extremely precise data 2% accuracy of strain gauge measured power Bluetooth & ANT with wireless firmware update & data acquisition system Easily rechargeable integrated battery with fully waterproof reliable electric system Hollow outer chainring, giving vast improvements in rigidity & increased weight savings The hollow outer chainring has essentially removed outer chainring flex, hugely improving shift performance making it precise even under high load These industry leading Hollow Tech II cold forged hollow crank arms have evolved to increase rigidity, reduce weight, & improve strength The teeth have been developed to work only in conjunction with the 11-speed chains for enhanced contact providing more efficiency & enhanced power transfer There is a wide range of chainring ratios & crank arm lengths available enabling customisation for all riders & racing disciplines Hollow Tech II integrated bottom bracket design uses a wider bearing placement & larger axle diameter for increased stiffness & efficiency Bottom bracket seal design has a minimal bearing interface gives superbly smooth rolling & increased durability

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With several years of development & working closely with professional teams you can expect extreme accuracy from Shimano's first fully integrated power meter Hollow Tech II 11-speed Dura-Ace chainset.

Features: Accurately calibrated strain gauges are integrated inside both left & right crank arms, this provides a stable measurement system through rotation from both sides for extremely precise data 2% accuracy of strain gauge measured power Bluetooth & ANT with wireless firmware update & data acquisition system Easily rechargeable integrated battery with fully waterproof reliable electric system Hollow outer chainring, giving vast improvements in rigidity & increased weight savings The hollow outer chainring has essentially removed outer chainring flex, hugely improving shift performance making it precise even under high load These industry leading Hollow Tech II cold forged hollow crank arms have evolved to increase rigidity, reduce weight, & improve strength The teeth have been developed to work only in conjunction with the 11-speed chains for enhanced contact providing more efficiency & enhanced power transfer There is a wide range of chainring ratios & crank arm lengths available enabling customisation for all riders & racing disciplines Hollow Tech II integrated bottom bracket design uses a wider bearing placement & larger axle diameter for increased stiffness & efficiency Bottom bracket seal design has a minimal bearing interface gives superbly smooth rolling & increased durability

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With several years of development & working closely with professional teams you can expect extreme accuracy from Shimano's first fully integrated power meter Hollow Tech II 11-speed Dura-Ace chainset.

Features: Accurately calibrated strain gauges are integrated inside both left & right crank arms, this provides a stable measurement system through rotation from both sides for extremely precise data 2% accuracy of strain gauge measured power Bluetooth & ANT with wireless firmware update & data acquisition system Easily rechargeable integrated battery with fully waterproof reliable electric system Hollow outer chainring, giving vast improvements in rigidity & increased weight savings The hollow outer chainring has essentially removed outer chainring flex, hugely improving shift performance making it precise even under high load These industry leading Hollow Tech II cold forged hollow crank arms have evolved to increase rigidity, reduce weight, & improve strength The teeth have been developed to work only in conjunction with the 11-speed chains for enhanced contact providing more efficiency & enhanced power transfer There is a wide range of chainring ratios & crank arm lengths available enabling customisation for all riders & racing disciplines Hollow Tech II integrated bottom bracket design uses a wider bearing placement & larger axle diameter for increased stiffness & efficiency Bottom bracket seal design has a minimal bearing interface gives superbly smooth rolling & increased durability

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With several years of development & working closely with professional teams you can expect extreme accuracy from Shimano's first fully integrated power meter Hollow Tech II 11-speed Dura-Ace chainset.

Features: Accurately calibrated strain gauges are integrated inside both left & right crank arms, this provides a stable measurement system through rotation from both sides for extremely precise data 2% accuracy of strain gauge measured power Bluetooth & ANT with wireless firmware update & data acquisition system Easily rechargeable integrated battery with fully waterproof reliable electric system Hollow outer chainring, giving vast improvements in rigidity & increased weight savings The hollow outer chainring has essentially removed outer chainring flex, hugely improving shift performance making it precise even under high load These industry leading Hollow Tech II cold forged hollow crank arms have evolved to increase rigidity, reduce weight, & improve strength The teeth have been developed to work only in conjunction with the 11-speed chains for enhanced contact providing more efficiency & enhanced power transfer There is a wide range of chainring ratios & crank arm lengths available enabling customisation for all riders & racing disciplines Hollow Tech II integrated bottom bracket design uses a wider bearing placement & larger axle diameter for increased stiffness & efficiency Bottom bracket seal design has a minimal bearing interface gives superbly smooth rolling & increased durability

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Dura-Ace SM-RT900 Ice Tech rotors providing consistent braking performance through energy control, using revolutionary stainless steel / alloy 3-layer sandwich construction that manages heat while riding. The clad steel / alloy / steel rotor construction allows heat generated from braking to radiate quickly through the aluminium core achieving surface temperature drops of around 50 deg C. When used with Ice Tech pads surface temperatures can drop from around 400 to 300 deg C, this provides great improvements in performance all round. Key

Features: FREEZA rotors allow the alloy core to extend out from the braking surface as a fins to the Centre-Lock mount adapter to providing added cooling Ice Tech rotors achieve long pad life, less noise & less fade due to enhanced heat dispersion Rotors are durable lightweight & rigid, using the proven Shimano Centre-Lock system giving increased strength & security with an easy set-up Precision cut & drilled braking surface improves pad clearing in muddy conditions while aiding cooling under high load Large alloy spider is a highly rigid & lightweight support for the rotor surface Super polished braking surface gives excellent braking performance Average weight 94 grams (140 mm)

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The Shimano Dura Ace R9100 11 Speed Groupset
Includes:: Shimano Dura Ace FC-9100 Chainset The Hollow Tech II 11-speed
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The Shimano Dura Ace R9100 11 Speed Groupset
Includes:: Shimano Dura Ace FC-9100 Chainset The Hollow Tech II 11-speed
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The Shimano Dura Ace R9100 11 Speed Groupset
Includes:: Shimano Dura Ace FC-9100 Chainset The Hollow Tech II 11-speed
...

The Shimano Dura Ace R9100 11 Speed Groupset
Includes:: Shimano Dura Ace FC-9100 Chainset The Hollow Tech II 11-speed
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The Shimano Dura Ace R9100 11 Speed Groupset
Includes:: Shimano Dura Ace FC-9100 Chainset The Hollow Tech II 11-speed
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