HG-X chains uses a directional design with specifically shaped inner & outer plates to optimise shifting over the chainset & cassette. The outer plate design has been developed to reduce the chance of chain suck. The inner plate has been developed for better contact with gears providing smoother shifting under high load, giving efficient pedaling, increased rigidity & near silent running. Hollow link pins offer great weight savings & durability is assured through a chromising treatment on link pins, & the heat treatment of rollers, pins, & plates. The open design of inner links help increase mud shedding ability which, in turn, helps to increase chain life. Sil-Tec surface treatment technology (PTFE plating) is smooth running & increases durability. Zinc-alloy silver finish offers the longest lasting & best resistance to corrosion.