{"product_id":"shimano-grx-fc-rx820-2-12-speed-double-chainring-31t-for-48-31t-gravel-bikes","title":"Shimano GRX FC-RX820-2 12-Speed Double Chainring 31T for 48-31T Gravel Bikes","description":"\u003cp\u003eThe Shimano GRX FC-RX820-2 12-speed double chainrings are expertly engineered to enhance your gravel riding experience. Designed specifically for the 48-31T combination, these chainrings provide smooth and reliable shifting even on the toughest terrains. Crafted from lightweight aluminium with anodised teeth, they offer excellent durability without compromising performance.\u003c\/p\u003e\n\n\u003cp\u003eThese chainrings work seamlessly with Shimano’s 12-speed HG+ chain, ensuring efficient power transfer and precise gear changes under high load conditions. Whether you're tackling long off-road adventures or demanding muddy trails, the FC-RX820-2 delivers consistent pedaling smoothness and optimal balance between rigidity and weight.\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 drivetrain performance\u003c\/li\u003e\n  \u003cli\u003eProviding reliable, crisp shifting on gravel and rough terrain\u003c\/li\u003e\n  \u003cli\u003eEnhancing pedaling efficiency with Shimano’s 12-speed HG+ chain compatibility\u003c\/li\u003e\n  \u003cli\u003eOffering durable performance with lightweight aluminium construction and anodised teeth\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 drivetrains\u003c\/li\u003e\n  \u003cli\u003eCompatibility outside the 48-31T chainring setup\u003c\/li\u003e\n  \u003cli\u003eApplications requiring single chainring configurations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use these chainrings with any Shimano GRX crankset?\u003c\/strong\u003e\u003cbr\u003eThese chainrings are specifically designed for the FC-RX820 2X cranksets and may not be compatible with other models.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre these chainrings compatible with all 12-speed chains?\u003c\/strong\u003e\u003cbr\u003eThey are optimized for Shimano’s HG+ 12-speed chains to ensure the best shifting performance and power transfer.\u003c\/p\u003e","brand":"Shimano GRX","offers":[{"title":"Default Title","offer_id":45478493094063,"sku":"Y0SC9801T","price":21.36,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/2003\/4223\/files\/1731600338-99340000.jpg?v=1768521921","url":"https:\/\/www.swinnertoncycles.co.uk\/products\/shimano-grx-fc-rx820-2-12-speed-double-chainring-31t-for-48-31t-gravel-bikes","provider":"Swinnerton Cycles","version":"1.0","type":"link"}