Description With its BEAM SPIDER construction, the new SHIMANO DEORE XT M8100 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. Definitive shifting performance – new shift ramp designs provide the fastest, smoothest shifts by HYPERGLIDE BEAM SPIDER – Lighter and stiffer construction reduces cassette inertia resulting in faster acceleration and increased chain securityMICRO SPLINE – 10T lowest sprocket realized by new microspline freehub body constructionWide range and close step 12-speed drivetrain
