SM-CD800 chain guide The chain guide ensures a stable drive even under the toughest conditions. It is optimized for the narrow 12-speed chain and can be easily adjusted with a screw.Shimano XTR M9100The new XTR continues 27 years of MTB innovation with even more speed, focus and control. You want to move the borders, and that on today's extremely demanding courses? The new XTR is packed with the technological edge you need. And it will inspire you to get the most out of you. Shimano has continued to work very hard since they introduced the very first MTB group 27 years ago. The XTR is convincing proof of this. With its completely new design, it is by far the most advanced MTB group on the market. It is lighter, more comfortable, more robust and more versatile. It converts the driver's performance into propulsion with extreme efficiency. - Application: MTB - Details: - Recommended cassettes: CS-M9100 10-45, 10-51 - Recommended chain: CN-M9100 - Chain line: 52 mm - Material specifications: Resin - Mounting: E-type (deep direct mounting) - Adjustability: with screw - Suitable for: with FC-M9120-1 / FC-M9100-1 - Accessory type: Chain guide