The strategic use of steel and alloy ensures the CS-M8200 cassette is robust enough to provide confidence to any style of rider. New cassette cog tooth profiles improve shifting under high load while remaining smooth, fast, and durable- Compatible with Micro Spline free hub standards- Provides maximum clearances and lighter weight- Pairs well with Mid Cage rear derailleur and 28t or 30t chainrings- Mounts with the use of a special lockring tool (TL-LR021)