Shimano CRM86 Front ChainringEngineered as a high performance direct mount chainring for Shimano XT 12 speed drivetrains, delivering superior chain retention and efficient power transfer. The Shimano CRM86 Front Chainring is a precision engineered component designed to perfectly integrate with Shimano XT M8100 and M8120 12 speed cranksets, forming the heart of a high performance 1x mountain bike drivetrain. Featuring Shimano's proprietary Dynamic Chain Engagement+ (DCE+) tooth