CN-M8100 XT/Ultegra 12-Speed Chain 138 Links Calf Sleeves SPD-SL integrates the shoe and

SPD-SL integrates the shoe and pedal so they perform as a single ultra-efficient component

and Achilles tendon

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

Bearings: Sealed

CN-M8100 XT/Ultegra 12-Speed Chain 138 Links Calf Sleeves SPD-SL integrates the shoe 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