Shimano Deore XT SM-CRM85 Chainring

Shimano's Deore XT SM-CRM85 stiff and lightweight chainring delivers smooth pedaling over bumpy terrain. The SM-CRM85 chainring features Shimano Dynamic Chain Engagement+ technology, which features special gear teeth profiles that deliver exceptional chain engagement and chain retention. Compatible with FC-M8100 / 8130 Deore XT cranks.

Technology

Dynamic Chain Engagement+

Shimano’s Dynamic Chain Engagement+ is a special gear teeth profile designed for use in single-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.

Features

• Dynamic Chain Engagement (DCE) is used to hold the chain and help prevent chain jump out. This is achieved by using a broader and taller tooth profile in conjunction with a special hooked leading edge and alternate profiled tooth shaping. This provides superior chain retention, lower driving sound, increased durability and drag to a minimum
• Hollow gear construction for optimized rigidity, lightweight and durability
• Durable teeth using a plated steel construction supported by a carbon composite (CFRP) carrier body
• HG 12-speed chain compatible
• Available in 28T/30T/32T/34T/36T