Shimano XTR CS-M9200 Cassette 12 Speed Size:10-51 it delivers smooth gear steps

it delivers smooth gear steps across its full 10-speed range

220/203mm MDR-P rotors

The position of the lever is adjusted by acting directly on the controls in a simple and safe manner

Rear Derailleur: Shimano Dura-Ace Di2 ST-R9250

Shimano XTR CS-M9200 Cassette 12 Speed Size:10-51 it delivers smooth gear stepsXTR 10 51T Cassette CS M9200 represents the evolution of HYPERGLIDE + shifting. New cassette cog tooth profiles improve shifting under high load while remaining smooth, fast, and durable. 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. Specifications 510% Range The widest gear range