The Shimano Deore XT SM-CRM85 4-arm chainring holds the chain safely even on rough terrain and guarantees at the same time an efficient, smooth and quiet drivetrain thanks to its Dynamic Chain Engagement+ tooth profile. Its Direct Mount system makes a quick chainring installation possible.

Compatible to the Shimano Deore XT 1-speed cranks FC-M8100-1, FC-M8120-1 and FC-M8130-1. 

Material:

aluminium (anodized), carbon fibre reinforced polymer (CFRP)
teeth: steel (painted)

Dynamic Chain Engagement+ is a special gear teeth profile designed for use in 1-speed chainring configurations for XC, Enduro and Trail Riding. It gives more chain retention and smoother pedaling - even over bumpy terrain. Chain retention of any gear will reduce abrasion and worn out.