{"product_id":"shimano-deore-xt-cs-m8100-12-speed-cassette-10-45t","title":"Shimano Deore XT CS-M8100 12-Speed MTB Cassette 10-45T Micro Spline HYPERGLIDE+ — Beam Spider E-MTB Rated","description":"\u003cp\u003eThe Shimano Deore XT CS-M8100 is a 12-speed mountain bike cassette tuned for wide-range, close-step gearing. With a 10-45T spread it delivers tight, usable jumps between gears for efficient cadence on climbs and flats alike, built on Shimano's HYPERGLIDE+ tooth profile for fast, seamless shifts under load.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFreehub compatibility:\u003c\/strong\u003e Mounts on a \u003cstrong\u003eShimano Micro Spline\u003c\/strong\u003e freehub body — required for the 10T smallest cog. It is not compatible with a standard HG freehub. Pairs with a Shimano 12-speed HG chain.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Shimano Deore XT CS-M8100 (M8100 series)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpeeds:\u003c\/strong\u003e 12-speed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGear range:\u003c\/strong\u003e 10-45T (450% range)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCog combination:\u003c\/strong\u003e 10-12-14-16-18-21-24-28-32-36-40-45T\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFreehub type:\u003c\/strong\u003e Shimano Micro Spline (not HG compatible)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShift technology:\u003c\/strong\u003e HYPERGLIDE+\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible chain:\u003c\/strong\u003e Shimano 12-speed HG (CN-M8100 \/ M9100)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Beam Spider — alloy carriers + alloy lockring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel cogs \/ aluminum carriers \u0026amp; lockring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eE-bike rated:\u003c\/strong\u003e Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 461 g (16.3 oz)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Silver \/ Black\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnology Highlights\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHYPERGLIDE+:\u003c\/strong\u003e New shift-ramp design for the fastest, smoothest shifts under full pedaling load.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBeam Spider:\u003c\/strong\u003e Light, stiff construction reduces cassette inertia for faster acceleration and better chain security.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMicro Spline 10T:\u003c\/strong\u003e New freehub body realizes a 10-tooth smallest cog and a wide, close-step 12-speed range.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eE-MTB durable:\u003c\/strong\u003e Meets Shimano's durability requirements for e-MTB drivetrains.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eMountain and e-MTB riders on a Shimano 12-speed Micro Spline drivetrain (XTR M9100, XT M8100, SLX M7100, Deore M6100) who want tighter gear steps than a 10-51T while keeping a versatile climbing range.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Shimano Deore XT CS-M8100 12-speed cassette (10-45T)\u003c\/li\u003e\n  \u003cli\u003e1 x alloy lockring\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCondition \u0026amp; Shipping\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Brand new in retail packaging\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShips from:\u003c\/strong\u003e Ontario, California (US domestic)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEstimated delivery:\u003c\/strong\u003e 3–5 business days\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReturns:\u003c\/strong\u003e Free 30-day returns\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":52906265706607,"sku":"ICSM8100045","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0635\/8840\/1263\/files\/XT_ICSM8100045_box.jpg?v=1781182145","url":"https:\/\/www.brinvo.com\/products\/shimano-deore-xt-cs-m8100-12-speed-cassette-10-45t","provider":"BrinVO","version":"1.0","type":"link"}