With its Beam Spider construction, the CS-M8100 Cassette 10-51 XT 12 Speed shaves weight while increasing Shimano’s MTB gearing range another gear. Using Shimano’s new Micro Spline Freehub body and HyperGlide+ tooth profile, these 10-51T cassettes deliver advanced shifting performance.

FEATURES:
• Average weight: 534 g (10-51T)
• 10-12-14-16-18-21-24-28-33-39-45-51T
• Compatible Chain: HG 12-speed
• Pedal continuously while shifting
• 10T lowest sprocket realized by new Freehub body construction
• Lighter and stiffer cassette sprocket construction reduces inertia and increases acceleration

BENEFITS:
• Lighter drivetrain set up
• Wide range and close step 12-speed drivetrain
• Advanced shifting performance provides the confidence to enjoy any trail

ABOUT 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. The Lightweight aluminum Micro Spline Freehub seamlessly integrates with small 10-tooth top gears and the smaller and more widely distributed splines limit cog damage on lightweight aluminum Freehub