With its BEAM SPIDER construction, the 12-speed XTR M9100 cassette cuts weight while increasing SHIMANO’s MTB gearing by another gear.

With SHIMANO’s new MICRO SPLINE freehub rear hub body and HYPERGLIDE tooth profile, these 10-45 and 10-51D cassettes provide the best MTB shifting on the market.

Specifications

• Gears: 12-speed (HYPERGLIDE )
• Combinations/Sizes :
  10-12-14-16-18-21-24-28-33-39-45-51D
  10-12-14-16-18-21-24-28-32-36-40-45D
• Compatible chain: 12-speed HG
• Sprockets: 12