{"product_id":"shimano-grx-rd-rx815-di2-11-speed-rear-derailleur-shadow-for-double-chainsets","title":"Shimano GRX RD-RX815 Di2 11-Speed Rear Derailleur Shadow+ for Double Chainsets","description":"\u003cp\u003eThe Shimano GRX RD-RX815 Di2 rear derailleur is engineered specifically for gravel enthusiasts seeking precision and reliability. Its low-profile Shadow Plus design not only offers a sleek aesthetic but also incorporates a chain stabilizing switch that minimizes chain bounce on rough terrain, ensuring a smooth and stable ride. Built with high tolerance cold forged aluminium, this derailleur balances lightweight performance with exceptional durability.\u003c\/p\u003e\n\n\u003cp\u003eOptimized for 11-speed systems and compatible with double chainsets, the Di2 technology guarantees fast and accurate electronic shifting. The GRX RD-RX815 supports a wide gear ratio up to 11-34T, providing versatile gearing options for varied terrain. Whether you’re tackling rugged trails or long rides, this component enhances your drivetrain’s quietness and stability.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It’s Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eReliable and precise electronic shifting with Di2 technology\u003c\/li\u003e\n  \u003cli\u003eStable chain retention on rough terrain thanks to Shadow Plus system\u003c\/li\u003e\n  \u003cli\u003eLightweight yet durable construction from cold forged aluminium\u003c\/li\u003e\n  \u003cli\u003eCompatibility with a wide gear range up to 11-34T for versatile riding\u003c\/li\u003e\n  \u003cli\u003eSpecifically designed for gravel riding with optimized ergonomics\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 single chainsets or incompatible gear ratios\u003c\/li\u003e\n  \u003cli\u003eNon-electronic shifting systems, as it requires Di2 connectivity\u003c\/li\u003e\n  \u003cli\u003eApplications outside gravel or similar off-road conditions where specialized features may be unnecessary\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs the Shimano GRX RD-RX815 compatible with all 11-speed systems?\u003c\/strong\u003e\u003cbr\u003eIt is compatible specifically with 11-speed E-tube Di2 electronic systems and 11-speed HG chains, designed for optimal performance within these parameters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this derailleur with a triple chainset?\u003c\/strong\u003e\u003cbr\u003eNo, this model is designed for use with double chainsets only, ensuring proper shifting and gear compatibility.\u003c\/p\u003e","brand":"Shimano GRX","offers":[{"title":"Default Title","offer_id":45478624985263,"sku":"RDRX815","price":282.11,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/2003\/4223\/files\/1559309073-38353300.jpg?v=1768522578","url":"https:\/\/www.swinnertoncycles.co.uk\/products\/shimano-grx-rd-rx815-di2-11-speed-rear-derailleur-shadow-for-double-chainsets","provider":"Swinnerton Cycles","version":"1.0","type":"link"}