With its BEAM SPIDER construction, the XTR M9100 12-speed cassette shaves weight while increasing SHIMANO's MTB gearing range another gear. Using SHIMANO's new MICRO SPLINE freehub body and HYPERGLIDE+ tooth profile, these 10-45 and 10-51T cassettes deliver the best MTB shift experience on offer.

Features
Definitive shifting
Let you pedal continuously while shifting
Increased acceleration by reducing inertia and weight by BEAM SPIDER construction
New MICRO SPLINE * construction to engage FREEHUB body

Specifications
Combinations: 10-45T, 10-51T
Combination: 10-12-14-16-18-21-24-28-32-36-40-45T
Combination: 10-12-14-16-18-21-24-28-33-39-45-51T

Mfr Claimed Weight
357g (10-45T), 367g (10-51T)