CN-M8100 XT/Ultegra 12-Speed Chain 138 Links Calf Sleeves accelerating the internal ventilation and

accelerating the internal ventilation and enhancing the sweat evaporation process to cool the rider’s head

Wide-mouth opening for easy filling and cleaning

Stay a step ahead of the competition in the TYR Women's Vitric Diamondfit Swimsuit

Bearings: Sealed

CN-M8100 XT/Ultegra 12-Speed Chain 138 Links Calf Sleeves accelerating the internal ventilation andShimano XT Ultegra CN M8100 12 Speed Bicycle Chain: The Shimano Deore XT Ultegra CN M8100 12 speed chain is optimized for use with the Deore XT M8100 MTB and 12 Speed Ultegra drivetrain systems. HYPERGLIDE+ technology dedicated chain delivers greater chain retention, improved shifting efficiency, and smoother transmission over rough terrain Extended inner plate improves chain engagement Reduced shift times and pedaling shock