evo.com | Shimano Chainrings > The Shimano Deore SL-CRM66 Chainring is a steel-tough replacement ring built specifically for the FC-M6200 crankset. Dynamic Chain Engagement+ narrow-wide teeth keep the chain seated over roots and rocks, and it comes in 30T or 32T to match your terrain and cadence. DYNAMIC CHAIN ENGAGEMENT+ Optimized narrow-wide chainring tooth profile for better chain retention and smoother shifting. Chainring Teeth 30T-32T Rear Speed 12-Speed | Shimano Deore SL-CRM66 Chainring 2027 - 32T