Shimano deore m590 9 speed triple chainsetshimanos deore m590 9 speed triple chainset is a cost effective lightweight and durable performer made from aluminium and steel this chainset performs well when shifting under load due to the inclusion of shimanos sg x chainring and their bespoke spike pins this two piece 9 speed chainset is a superb replacement or upgrade chainset for your current rig stiff and light chainsetthis deore fc m590 chainset features a firm two piece construction with an