{"product_id":"shimano-fc-rx820-grx-2x12-speed-hollowtech-ii-gravel-bike-chainset","title":"Shimano FC-RX820 GRX 2x12-Speed Hollowtech II Gravel Bike Chainset","description":"\u003cp\u003eThe Shimano FC-RX820 GRX Chainset 2x12-Speed Hollowtech II is engineered specifically for gravel enthusiasts seeking reliability and performance across diverse terrains. Featuring gravel-specific ergonomics and optimized gearing, this chainset ensures smooth, quiet, and stable drivetrain operation. Its lightweight anodized aluminium crank arms and chainrings provide durability without compromising efficiency.\u003c\/p\u003e\n\n\u003cp\u003eDesigned to perfectly integrate with HollowTech II bottom bracket cups and compatible with 12-speed Hyperglide+ chains, the FC-RX820 offers a versatile and rugged solution for mixed riding styles. The 4-arm design with a 110 mm bolt circle diameter balances strength and weight, making it ideal for challenging gravel adventures.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It’s Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eEnhancing gravel bike performance with optimized gearing for varied terrains\u003c\/li\u003e\n  \u003cli\u003eProviding smooth and quiet drivetrain operation for long rides\u003c\/li\u003e\n  \u003cli\u003eOffering durable, lightweight components for improved efficiency\u003c\/li\u003e\n  \u003cli\u003eCompatibility with HollowTech II bottom bracket and 12-speed Hyperglide+ chains\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 on bikes not designed for 12-speed or HollowTech II systems\u003c\/li\u003e\n  \u003cli\u003eRiding styles requiring single-speed or non-gravel specific components\u003c\/li\u003e\n  \u003cli\u003eApplications outside of cycling, such as motorized vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs the FC-RX820 compatible with my existing bottom bracket?\u003c\/strong\u003e\u003cbr\u003eIt is designed to work with HollowTech II type bottom bracket cups, so compatibility depends on your current setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this chainset with non-Hyperglide+ chains?\u003c\/strong\u003e\u003cbr\u003eFor optimal performance, Shimano recommends pairing it with 12-speed Hyperglide+ chains.\u003c\/p\u003e","brand":"Shimano GRX","offers":[{"title":"48 \/ 31 teeth \/ Grey \/ 170 mm","offer_id":45735523844271,"sku":"FCRX8202C81","price":233.2,"currency_code":"GBP","in_stock":true},{"title":"48 \/ 31 teeth \/ Grey \/ 172.5 mm","offer_id":45735523877039,"sku":"FCRX8202D81","price":233.2,"currency_code":"GBP","in_stock":true},{"title":"48 \/ 31 teeth \/ Grey \/ 175 mm","offer_id":45735523909807,"sku":"FCRX8202E81","price":233.2,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/2003\/4223\/files\/fcrx82024831.jpg?v=1768526416","url":"https:\/\/www.swinnertoncycles.co.uk\/products\/shimano-fc-rx820-grx-2x12-speed-hollowtech-ii-gravel-bike-chainset","provider":"Swinnerton Cycles","version":"1.0","type":"link"}