Shimano HG40 6,7,8 Speed Mountain Bike Chain

Hyperglide (HG) series 6, 7, or 8-speed compatible chain, recommended for Altus and older Alivio / STX drivetrains
HG technology has chamfered inner plates to optimise shifting performance on HG sprockets
Durability is assured through a chromising treatment on link pins, and the heat treatment of rollers, pins, and plates
Mushrooming of the pins gives unsurpassed side-plate retention, enabling the chain to far exceed the BS/ISO standard for breaking force
7.3 mm chain width, optimised for 7- and 8-speed HG drivetrains 116 links, 335 grams