{"product_id":"shimano-fc-r8100-chainring","title":"Shimano FC-R8100 Chainring","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eShimano inner \/ outer chainring for the named series crankset — the replacement tooth ring you swap when the teeth are worn down to the point where shifting gets rough or the chain starts slipping under load. Sold as the specific tooth-count variant matching your crankset configuration; not a complete crankset. Ultegra is Shimano's second-tier road groupset — approximately 95% of Dura-Ace performance at a materially lower price and weight cost. Standard on high-end consumer road bikes. This is the Shimano FC-R8100 Chainring.\u003c\/p\u003e\u003ch3\u003eDetails\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e\u003cbr\u003edrivetrain-service rebuild on the matched crankset\u003cbr\u003eteeth worn below shift-spec — the symptom is rough under-load shifts\u003cbr\u003echanging tooth-count (e.g. 53T -\u0026gt; 52T) to match terrain\u003cbr\u003ekeeping a race bike in spec ahead of a key block\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003cbr\u003eShimano Hyperglide+ \/ HG tooth profile\u003cbr\u003e4-arm or 5-arm spider depending on series\u003cbr\u003eInner or outer position — see product title\u003cbr\u003eTooth count selectable at checkout\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eConfiguration:\u003c\/strong\u003e\u003cbr\u003eSize: 52T · 50T · 36T · 34T\u003c\/p\u003e\u003ch3\u003eInstallation \u0026amp; Care\u003c\/h3\u003e\u003cp\u003eInstall to factory torque spec; replace chainring bolts if stripped or corroded. Clean and lubricate the chain at the same time — the lifespan of a new chainring is determined more by chain-wear discipline than by how much you ride.\u003c\/p\u003e\u003ch3\u003eBundle \u0026amp; Save\u003c\/h3\u003e\u003cp\u003eBuild a bundle and save up to 15% off.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.enroute.cc\/bundles\"\u003eShop Bundle Builder\u003c\/a\u003e\u003c\/p\u003e","brand":"Shimano","offers":[{"title":"52T","offer_id":43109261672696,"sku":"Y0NG98020","price":105.95,"currency_code":"EUR","in_stock":true},{"title":"50T","offer_id":43109261705464,"sku":"Y0NG98010","price":105.95,"currency_code":"EUR","in_stock":false},{"title":"36T","offer_id":43109261738232,"sku":"Y0NG36000","price":19.95,"currency_code":"EUR","in_stock":true},{"title":"34T","offer_id":43109261771000,"sku":"Y0NG34000","price":19.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/6373\/4429\/files\/ShimanoFC-R8100Chainring.png?v=1775603726","url":"https:\/\/checkout.enroute.cc\/en-de\/products\/shimano-fc-r8100-chainring","provider":"enroute.cc","version":"1.0","type":"link"}