Shimano CS M9200 12 Sprocket Speed 9 11 13 15 17 19 22 24 28 33 39 45T

Blacks

The 10-51t offering provides 510% of range, making it the most versatile cassette in the XTR family. It is also MICRO SPLINE compatible, and built with steel, titanium, and alloy cogs to optimize weight and durability.The 9-45t offering provides 500% of range, optimizing it for compact drivetrains with limited gear sacrifice. This cassette is still MICRO SPLINE-compatible and built with steel, titanium, and alloy cogs to optimize weight and durability.  Shimano XTR M9200 Groupset ReviewKey Features:• 510% Range: The widest gear range and most frame compatibility of all XTR cassette options. • Compact Drivetrain: When specified with smaller chainrings and the mid-cage XTR rear derailleur, the 9-45t XTR cassette provides a lightweight, ground-clearing option with a no-sacrifice 500% range.• Freehub Compatibility: CS-M9200 is compatible with the MICRO SPLINE freehub body standard. • Build Materials: The strategic use of steel, titanium, and alloy ensures the CS-M9200 cassette is lightweight and robust enough to provide racer confidence.

Amazon

XTR 12 Speed Hyperglide+ Single Front MTB Cassette Sprocket Only Microspline