CS-M9100-12 10-12 Micro Spline sprockets

If you ride mainly in the highest gear, the cassette will quickly wear out in the small blades. It's a good idea to change the last two sprockets. External blades on Shimano XTR 12-speed cassette Can be used for other Micro Spline cassettes Number of teeth 10 + 12 Suitable for the following cassettes Shimano SLX ICSM7100 Shimano XT ICSM8100 Shimano XTR CSM9100