Shimano Deore XT SM-CRM86 1x Direct Mount Chainring - 34t Shimano Direct Mount For 12-Speed HG+ Chain Fits FC-M8200 Crank BLKShimano Deore XT SM CRM86 1x Direct Mount Chainring 34t Shimano Direct Mount For 12 Speed HG+ Chain Fits FC M8200 Crank Black. Direct mount and equipped with Dynamic Chain Engagement+ technology for best in class retention the reinforced SM CR86 chainring is impact resistant compatible with DEORE XT cranksets and offered in sizes from 28t to 36t in two tooth increments. Tried and true Dynamic Chain Engagement+ keeps the chain glued to the ring