The Gusset DHS-9 Chain is one of the strongest mountain bike chains available. Designed for downhill, the DHS-9 is heat treated for extra strength and durability. The bottom part of the outer bike chain plate is chamfered in much the same way as a normal 9 speed chain (allowing regular gear shift pick-up), however, the upper part of the chain plate is bigger than normal. The bigger surface area plate increases the tensile strength and strike endurance of the chain
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