{"product_id":"shimano-xtr-rear-derailleur-12-speed-gray-with-clutch","title":"Shimano XTR RD-M9100 12-Speed Gray Clutch Rear Derailleur","description":"\u003cp\u003eThe Shimano XTR RD-M9100 is a \u003cstrong\u003e12-speed mountain derailleur designed to withstand full-force pedaling on the roughest trails\u003c\/strong\u003e. It uses a Shadow RD+ clutch, reduced tension in low gears and a larger 13t pulley.\u003c\/p\u003e\n\u003cp\u003eThis listing offers \u003cstrong\u003elong and medium cages in gray\u003c\/strong\u003e. Shimano lists 45t or 51t largest cogs, 35t or 41t capacity, and 237 g or 240 g across them.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eXC and trail racers on XTR 12-speed.\u003c\/li\u003e\n\u003cli\u003eRiders replacing an M9100.\u003c\/li\u003e\n\u003cli\u003eNot for SRAM or 11-speed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eWhat to Look For\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCage:\u003c\/strong\u003e Long or medium; check stock by cage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCassette:\u003c\/strong\u003e Up to 51t.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShifter:\u003c\/strong\u003e Shimano 12-speed mountain.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eShadow RD+ clutch.\u003c\/strong\u003e Reduces chain slap for a quiet drivetrain.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLower low-gear tension.\u003c\/strong\u003e Prevents high chain tension in the biggest cogs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e13t pulley.\u003c\/strong\u003e Larger pulley for efficiency.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eRider Intent Summary\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBiggest strengths:\u003c\/strong\u003e Shimano's top mechanical 12-speed at 237–240 g.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTradeoffs:\u003c\/strong\u003e Premium tier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat makes it different:\u003c\/strong\u003e XTR race-level weight and chain control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eVictory's Take\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eWe fit XTR on race builds where weight and precision lead. Victory Bicycle Studio can confirm cage choice.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Shimano\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e XTR RD-M9100\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrivetrain speeds:\u003c\/strong\u003e 12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLargest cog:\u003c\/strong\u003e 45t \/ 51t depending on cage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChain wrap capacity:\u003c\/strong\u003e 35t \/ 41t depending on cage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCage options:\u003c\/strong\u003e Long (SGS), Medium (GS)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount type:\u003c\/strong\u003e 10x1 standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShifter compatibility:\u003c\/strong\u003e Shimano mountain\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulley:\u003c\/strong\u003e 13t\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 237 g \/ 240 g depending on cage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Gray\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart numbers:\u003c\/strong\u003e IRDM9100SGS (long), IRDM9100GS (medium)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Shimano","offers":[{"title":"Long","offer_id":53537586413875,"sku":"IRDM9100SGS","price":330.0,"currency_code":"USD","in_stock":true},{"title":"Medium","offer_id":53537586446643,"sku":"IRDM9100GS","price":330.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0981\/3685\/0739\/files\/9af7afcaf6e872422e6910a87ba8f37a1e3e9b40.jpg?v=1782250852","url":"https:\/\/victorybicyclestudio.com\/products\/shimano-xtr-rear-derailleur-12-speed-gray-with-clutch","provider":"Victory Bicycle Studio","version":"1.0","type":"link"}