{"product_id":"shimano-sm-crm85-xt-12-speed-m8100-20-30-1x-dce-single-chainring-replacement","title":"Shimano SM-CRM85 XT 12-Speed M8100\/20\/30 1X DCE Single Chainring Replacement","description":"\u003cp\u003eThe Shimano SM-CRM85 XT 12-speed single chainring is engineered to deliver exceptional performance for mountain biking enthusiasts. Designed as a perfect replacement for worn or damaged chainrings, it ensures your bike maintains smooth and reliable shifting. Combining lightweight materials with robust construction, it offers the ideal balance of durability and precision for demanding trail rides.\u003c\/p\u003e\n\n\u003cp\u003eIncorporating Shimano’s DYNAMIC CHAIN ENGAGEMENT+ technology, this chainring provides superior chain retention and smoother pedaling, even under high torque. Its optimized tooth profile works seamlessly with Shimano’s 12-speed HG+ chain, enhancing power transfer and overall drivetrain efficiency. Available in multiple sizes and built with a mix of steel teeth, CFRP body, and aluminum arms, it guarantees long-lasting performance and compatibility with FC-M8100, M8120, and M8130 1X cranksets.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It’s Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eReplacing worn or damaged chainrings to restore optimal shifting performance\u003c\/li\u003e\n  \u003cli\u003eProviding lightweight yet rigid construction for precise gear changes under heavy load\u003c\/li\u003e\n  \u003cli\u003eEnhancing chain retention and pedaling smoothness with DYNAMIC CHAIN ENGAGEMENT+ technology\u003c\/li\u003e\n  \u003cli\u003eImproving power transfer efficiency when paired with Shimano 12-speed HG+ chains\u003c\/li\u003e\n  \u003cli\u003eCompatibility with Shimano FC-M8100, M8120, and M8130 1X cranksets for easy installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat It’s NOT Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUse with non-Shimano 12-speed chains or cranksets without proper compatibility\u003c\/li\u003e\n  \u003cli\u003eInstallation without the specific Shimano TL-FC41 front chainring direct mount tool\u003c\/li\u003e\n  \u003cli\u003eApplications requiring multi-chainring setups, as this is designed for 1X systems only\u003c\/li\u003e\n  \u003cli\u003eRiders seeking chainrings outside the available tooth sizes (28T to 36T)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs this chainring compatible with all Shimano 12-speed drivetrains?\u003c\/strong\u003e\u003cbr\u003eIt is specifically designed for Shimano’s 12-speed HG+ chains and compatible with FC-M8100, M8120, and M8130 1X cranksets.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need any special tools to install this chainring?\u003c\/strong\u003e\u003cbr\u003eYes, installation requires the Shimano TL-FC41 front chainring direct mount tool to ensure proper fitting.\u003c\/p\u003e","brand":"Shimano Deore XT","offers":[{"title":"30 teeth \/ Silver","offer_id":45735526105263,"sku":"SMCRM85A0","price":58.34,"currency_code":"GBP","in_stock":true},{"title":"32 teeth \/ Silver","offer_id":45735526138031,"sku":"SMCRM85A2","price":58.34,"currency_code":"GBP","in_stock":true},{"title":"34 teeth \/ Silver","offer_id":45735526170799,"sku":"SMCRM85A4","price":58.34,"currency_code":"GBP","in_stock":true},{"title":"36 teeth \/ Silver","offer_id":45735526203567,"sku":"SMCRM85A6","price":58.34,"currency_code":"GBP","in_stock":true},{"title":"28 teeth \/ Silver","offer_id":45735526236335,"sku":"SMCRM85Z8","price":58.34,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/2003\/4223\/files\/smcrm85a0a.jpg?v=1768509698","url":"https:\/\/www.swinnertoncycles.co.uk\/products\/shimano-sm-crm85-xt-12-speed-m8100-20-30-1x-dce-single-chainring-replacement","provider":"Swinnerton Cycles","version":"1.0","type":"link"}