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, this 10-45 cassette delivers the best MTB shift experience.

• Combination: 10-12-14-16-18-21-24-28-32-36-40-45T
• Compatible chain: HG 12-speed

Technologies

MICRO SPLINE

MICRO SPLINE delivers lightweight aluminum FREEHUB body to reduce weight and 10 teeth top gear. Use combination with MICRO SPLINE cassette sprocket and FREEHUB.

Features

• Lightweight aluminum MICRO SPLINE FREEHUB seamlessly integrates with small 10-tooth top gears.
• Smaller and more widely distributed splines limit cog damage on lightweight aluminum FREEHUB.

HYPERGLIDE+

HYPERGLIDE+ dedicated chain delivers greater chain retention, improved shifting efficiency, and smoother transmission over rough terrain.

Benefits

• Improved chain retention encourages more aggressive all-terrain riding and relieves chain-issue anxiety.
• Smoother drivetrain transmission and enhanced shifting performance sharpens riders’ concentration and improves acceleration.
• Better chain engagement cuts abrasion, reduces maintenance, and lengthens the lifespan of the chain.