{"product_id":"shimano-cn-m9100-xtr-dura-ace-12-speed-hg-chain-126l-sil-tec-quick-link-included","title":"Shimano CN-M9100 XTR \u0026 Dura-Ace 12-Speed HG+ Chain – 126L, Sil-Tec, Quick Link Included","description":"\u003cp\u003eThe \u003cstrong\u003eShimano CN-M9100\u003c\/strong\u003e is the flagship 12-speed chain shared across Shimano's top-tier road and MTB groupsets — the \u003cstrong\u003eDura-Ace R9200\u003c\/strong\u003e and \u003cstrong\u003eXTR M9100\u003c\/strong\u003e. It uses Shimano's \u003cstrong\u003eHG+ (Hyperglide+)\u003c\/strong\u003e chain profile, engineered specifically to work with Hyperglide+ chainrings and cassette sprockets for shifts that are significantly faster and smoother than the previous HG system, particularly under load. The chain features \u003cstrong\u003eSil-Tec PTFE surface treatment\u003c\/strong\u003e on the inner and outer plates, reducing friction and improving wear resistance compared to an untreated chain. \u003cstrong\u003e126 links\u003c\/strong\u003e, supplied with a \u003cstrong\u003eQuick Link\u003c\/strong\u003e for tool-free installation and removal. Compatible with the \u003ca href=\"\/products\/shimano-cs-r9200-dura-ace-12-speed-cassette-with-hyperglide-technology\"\u003eShimano CS-R9200 Dura-Ace 12-speed cassette\u003c\/a\u003e and \u003ca href=\"\/products\/shimano-fc-r9200-dura-ace-12-speed-double-chainset-cranks-for-road-cycling\"\u003eFC-R9200 Dura-Ace chainset\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003eThe CN-M9100 uses \u003cstrong\u003ecomputer-optimised plate profiles\u003c\/strong\u003e with a super-narrow design to reduce weight and improve mud clearance, and \u003cstrong\u003ehollow pins\u003c\/strong\u003e to reduce overall chain weight. The outer plate geometry is designed to reduce chain suck — where the chain sticks to the chainring on the downstroke rather than releasing cleanly. The chain is directional and must be installed with the Shimano logo facing outward. For 11-speed Dura-Ace or XTR builds, see the \u003ca href=\"\/products\/shimano-cn-hg901-dura-ace-xtr-11-speed-hg-x-chain-with-sil-tec-quick-link-116l\"\u003eShimano CN-HG901 11-speed chain\u003c\/a\u003e. Browse our full \u003ca href=\"\/collections\/transmission\"\u003etransmission collection\u003c\/a\u003e for chains, cassettes, and drivetrain components.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It's Good For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eShimano 12-speed HG+ drivetrains — \u003ca href=\"\/products\/shimano-cs-r9200-dura-ace-12-speed-cassette-with-hyperglide-technology\"\u003eDura-Ace R9200\u003c\/a\u003e and XTR M9100\u003c\/li\u003e\n\u003cli\u003eHyperglide+ shifting — faster, smoother shifts under load vs previous HG system\u003c\/li\u003e\n\u003cli\u003eSil-Tec PTFE surface treatment — reduced friction and improved wear resistance\u003c\/li\u003e\n\u003cli\u003e126 links — suitable for most road and MTB builds; trim to length as required\u003c\/li\u003e\n\u003cli\u003eQuick Link included — tool-free installation and removal\u003c\/li\u003e\n\u003cli\u003eHollow pins and narrow profile — lightweight construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat It's NOT Good For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e11-speed drivetrains — use the \u003ca href=\"\/products\/shimano-cn-hg901-dura-ace-xtr-11-speed-hg-x-chain-with-sil-tec-quick-link-116l\"\u003eCN-HG901 11-speed chain\u003c\/a\u003e instead\u003c\/li\u003e\n\u003cli\u003eNon-Shimano 12-speed systems — HG+ chain profile is optimised for Shimano Hyperglide+ components\u003c\/li\u003e\n\u003cli\u003e10-speed or fewer drivetrains — chain width is not compatible\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs this chain compatible with SRAM or Campagnolo 12-speed groupsets?\u003c\/strong\u003e\u003cbr\u003eThe CN-M9100 uses Shimano's HG+ chain profile, which is optimised for Shimano Hyperglide+ chainrings and cassettes. While the chain width is broadly similar to other 12-speed chains, Shimano recommends using HG+ chains with HG+ components for optimal shifting performance. For SRAM AXS or Campagnolo 12-speed builds, use the chain specified by those manufacturers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes the chain need to be directional when installed?\u003c\/strong\u003e\u003cbr\u003eYes — the CN-M9100 is directional. Install with the Shimano logo and model number facing outward (away from the bike). Installing the chain in reverse will not damage the drivetrain but may result in slightly reduced shifting performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow do I size the chain correctly?\u003c\/strong\u003e\u003cbr\u003eThe standard method is to route the chain through the front and rear derailleur without threading it through the rear derailleur cage, then add two links to the length where the ends meet. Alternatively, use the largest chainring and largest sprocket method: route the chain through both without the rear derailleur, add two links, and cut to length. The Quick Link connects the two ends once sized correctly.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow often should I replace the chain?\u003c\/strong\u003e\u003cbr\u003eReplace the chain before it reaches 0.75% wear (measured with a chain wear indicator tool) to avoid accelerated wear on the \u003ca href=\"\/products\/shimano-cs-r9200-dura-ace-12-speed-cassette-with-hyperglide-technology\"\u003ecassette\u003c\/a\u003e and chainrings. On a 12-speed drivetrain, regular chain replacement is particularly important as the narrower chain and sprockets wear faster than wider 10 or 11-speed systems. Keeping the chain clean and lubricated will significantly extend its service life.\u003c\/p\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":45478468845743,"sku":"CNM9100126Q","price":45.05,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/2003\/4223\/files\/1529492229-39049000.jpg?v=1768522072","url":"https:\/\/www.swinnertoncycles.co.uk\/products\/shimano-cn-m9100-xtr-dura-ace-12-speed-hg-chain-126l-sil-tec-quick-link-included","provider":"Swinnerton Cycles","version":"1.0","type":"link"}