Shimano XTR CS-M9100-12 Lock Ring & Spacer is designed to fit the Shimano XTR 12 Speed MTB cassette and is a useful replacement part. This is lightweight and allows you to lock you XTR CS-M9100-12 cassette to the freehub on your bike.

FEATURES

• Weight: 6g
• Shimano XTR groupset
• 12 Speed compatible