Hyperglide (hg) series 6, 7, or 8-speed compatible chain, recommended for altus and older alivio / stx drivetrainshg technology has chamfered inner plates to optimise shifting performance on hg sprocketscomes with quick and easy to use connecting linkdurability is assured through the heat treatment of rollers, pins, and platesmushrooming of the pins gives unsurpassed side-plate retention, enabling the chain to far exceed the bs/iso standard for breaking force7.3 mm chain width, optimised for 7- and 8-speed hg drivetrains114 links, 335 grams
