Cassette Shimano SLX CS-M7100 12-speed

With its BEAM SPIDER construction, the SLX M7100 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 advanced shifting performance.Pedal continuously while shiftingLighter and stiffer cassette sprocket construction reduces inertia and increases acceleration10T lowest sprocket realized by new FREEHUB body constructionAdvanced shifting performance provides the confidence to enjoy any trailLighter drivetrain set upWide range and close step 12-speed drivetrainCOMBINATION (OPTIONAL): 10-45T or 10-51TWeight: 513 g (10-45T), 534 g (10-51T)Combination 10-45T: 10-12-14-16-18-21-24-28-32-36-40-45TCombination 10-51T: 10-12-14-16-18-21-24-28-33-39-45-51TCompatible chain: HG 12-speedMICROSPLINE - it delivers lightweight aluminum FREEHUB body to reduce weight and 10 teeth top gear. Use combination with MICRO SPLINE cassette sprocket and FREEHUB. 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+ drivetrain’s redesigned cassette and chain promotes the next generation of MTB riding by enhancing speed, shifting efficiency and smoothness over any terrain. Better chain engagement, stronger retention, and smoother pedaling provide greater power and confidence over rapidly changing terrain. Definitive up and down shifting in both directions boosts riders’ concentration and acceleration. Ultra-efficient drivetrain with smoother power transmission increases comfort and reduces rider stress. A wide range of gearing choices, cassette options and the choice of a single or double front chainring, support a wide variety of MTB riding styles, abilities and preferences. HYPERGLIDE+ helps riders seamlessly maneuver rough trails by reducing pedaling shock and cutting shifting times by a 1/3. (vs. current HG system)