Hyperglide (HG-X) series 10-speed directional Dyna-Sys compatible chain for use with 10-speed MTB drivetrainsHG-X Chain uses a directional design with specifically shaped inner and outer plates to optimise shifting over the chainset and cassetteOuter plate design has been developed to reduce the chance of chain suckThe inner plate has been developed for better contact with gears providing smoother shifting under high load, giving efficient pedalling, increased rigidity and near silent runningDurability is assured through a chromising treatment on link pins, and the heat treatment of rollers, pins, and platesOpen design of inner links increase mud shedding abilityMushrooming of the pins gives unsurpassed side-plate retention, enabling the chain to far exceed the BS/ISO standard for breaking forceChain is optimised for Shimano 10-speed HG-X MTB drivetrains onlyCorrosion-resistant grey finish on inner and outer plates116 links, 274 grams