Shimano Ultegra Shimano FC-6703 Ultegra 10-speed HollowTech II

The HollowTech II 10-speed Ultegra chainset offers an ideal balance of light weight and stiffness ma

Shimano Ultegra Shimano FC-6703 Ultegra 10-speed HollowTech II

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 and CN6600 chains for increased contact to provide greater efficiency and impr

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