Shimano SM-CRM95 XTR 1x Direct-Mount Chainring M9100 M9120 Cranks requires Hyperglide+ compatible chain 34TShimano SM CRM95 XTR 1x Direct Mount Chainring for M9100 and M9120 Cranks requires Hyperglide+ compatible chain 34T. The Shimano SM CRM95 XTR 1x chainring offers superior chain engagement for optimal chain retention. The gear tooth profile is specifically designed for MTB riding usage. Compatible only with Hyperglide+ chains Features Shimanos Dynamic Chain Engagement+ gear tooth technology which is designed to maintain chain retention for smoother