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Shimano XTR SM-CRM91 Single Chainring


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ColourSilver / Black

Shimano is a Japanese multinational corporation synonymous with cycling. Constituting 50% of sales in the global cycling market, and with their parts spanning across all types of bicycle, it is a highly reputable business that is constantly developing and innovating its assets.

Shimano XTR SM-CRM91 Single Chainring
Shimano XTR SM-CRM91 Single Chainring Shimano XTR SM-CRM91 Single Chainring Shimano XTR SM-CRM91 Single Chainring

Shimano brings top-level design to the lightweight and durable SM-CRM91 chainring. The Shimano XTR chainring features Dynamic Chain Engagement+ for smoother pedaling and better chain retention over bumpy terrain and is offered in 30/32/34/36T gear options. Compatible with FC-M9000 / 9020 XTR cranks.


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.


  • 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 Stainless steel construction supported by a carbon and alloy carrier body on 36T/34T, alloy carrier body on 32T/30T
  • Dyna-Sys11 HG-X11 11-speed chain compatible
  • Available in 30T/32T/34T/36T

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