The HG-94 Hyperglide-X directional chain is optimised for use with Shimano's new Deore XT Dyna-Sys 10 speed mountain bike drivetrain and uses specifically shaped inner and outer plates to optimise shifting over the chainset and cassette under load, increase smoothness and offer near silent running (whilst the outer plate has been designed to reduce the risk of chain suck). Durability is assured through a chromising treatment on link pins, and the heat treatment of rollers, pins, and plates. This Shimano chain features zinc alloy plating and a grey finish on inner and outer plates increasing corrosion resistance. Mushrooming of the pins gives unsurpassed side-plate retention, enabling the chain to far exceed the BS/ISO standard for breaking force and the open design of the inner links increases it's mud shedding ability.