Built for durability and maximum chain retention, the SM-CR86 direct-mount chainring features Shimano’s proven Dynamic Chain Engagement technology. Reinforced for impact resistance and compatible with DEORE XT cranksets, it’s available in 28T to 36T sizes in 2-tooth increments, making it easy to dial in your perfect gearing for any trail setup. Features: Dynamic Chain Engagement Proven tooth profile design keeps your chain securely in place across all terrains. Ring Sizes Offered in 28T to 36T to suit every rider and drivetrain configuration. Compact Drivetrain Pair the 28T chainring with a mid-cage derailleur and 9-45T cassette for a lightweight setup with wide-range gearing. Compatibility: The Shimano XT SM-CRM86 Chainring is 100% backward compatible with previous generation Shimano 12-speed chains, crank arms, and drivetrains. Compatible models include: XTR M9100 and M9200, Deore XT M8100, SLX M7100, and Deore M6100. The XTR SM-CRM96 is compatible with the following: Crank Arms: Shimano 12-speed Crank Arms (FC-M9100, M9200, M8100, M7100, M6100) Chain: 12-speed HG: XTR M9100 , Deore XT M8100 , SLX M7100 , Deore M6100