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The HollowTech II 10-speed Ultegra chainset offers an ideal
balance of light weight and stiffness, making it the perfect
choice for both enthusiast and competitive riders.
• HollowGlide hollow outer chainring gives vast improvements
in rigidity by virtually removing outer chainring flex and
hugely improves shift performance, even under high load.
• The chainring teeth have been developed to work in
conjunction with the CN-7900 and CN6700 chains for increasedcontact
to provide greater efficiency and improved power transfer.
• Industry leading HollowTech II cold forged hollow
crank arms have been evolved to increase rigidity, reduce
weight and improve strength.
• A wide range of chainring options and crank armlengths
are available to meet the needs of all riders and racing disciplines.
• HollowTech II integrated bottom bracket uses a wider
bearing placement and larger axle diameter for increased stiffness
and efficiency.
• HollowTech II integrated bottom bracket seal design
has minimal bearing interface ensuring smooth rolling and
increased durability.
• Weight including bottom bracket 785 grams.
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