{"product_id":"shimano-grx-st-rx815-grx-di2-2-speed-sti-bled-with-br-rx820-calliper","title":"Shimano GRX ST-RX815 Di2 2-Speed STI Lever with BR-RX820 Hydraulic Brake Caliper","description":"\u003cp\u003eThe Shimano GRX ST-RX815 GRX Di2 2-speed STI paired with the BR-RX820 caliper represents a pinnacle in gravel-specific cycling components. Designed with ergonomic precision, this system delivers an unmatched combination of control, modulation, and power through its hydraulic disc brakes, ensuring confident stopping power even on the most challenging terrain. Its thoughtfully engineered lever design enhances grip and reduces fatigue, making it ideal for long rides over rough surfaces.\u003c\/p\u003e\n\n\u003cp\u003eFeaturing an 11-speed E-tube Di2 compatible setup, this kit provides seamless electronic shifting performance tailored to gravel riders. The raised hood head and recessed finger notch prevent hand slippage, allowing for secure handling during descents and technical sections. Additionally, the anti-slip texture and brake lever coating contribute to higher braking efficiency, while the fully bled system ensures reliability and responsiveness right out of the box.\u003c\/p\u003e\n\n\u003cp\u003eSupplied with the bled left hand ST-RX815 STI lever, BR-RX820 flat mount rear brake caliper, pads, hose, and mineral oil, this kit is ready to integrate into your gravel rig. Electrical cables must be ordered separately to match your setup. Explore more components from the \u003ca href=\"\/collections\/shimano-grx\"\u003eShimano GRX\u003c\/a\u003e family to complete your build with compatible parts and accessories.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It’s Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eProviding precise and powerful braking control on varied terrain\u003c\/li\u003e\n  \u003cli\u003eEnhancing rider confidence with improved grip and ergonomic lever design\u003c\/li\u003e\n  \u003cli\u003eReducing rider fatigue during long gravel rides\u003c\/li\u003e\n  \u003cli\u003eOffering seamless electronic shifting with 11-speed Di2 compatibility\u003c\/li\u003e\n  \u003cli\u003eEnsuring reliable performance with a fully bled hydraulic system\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 mechanical shifting systems without appropriate modifications\u003c\/li\u003e\n  \u003cli\u003eCompatibility with rotors and adapters, which need to be sourced separately\u003c\/li\u003e\n  \u003cli\u003eRiders who prefer non-electronic shifting setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this kit include electrical cables for Di2?\u003c\/strong\u003e\u003cbr\u003eThe levers are supplied without electrical cables; these must be ordered separately to fit your specific setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the rotor included with the brake caliper?\u003c\/strong\u003e\u003cbr\u003eNo, the rotor and adapter are not included and need to be purchased separately.\u003c\/p\u003e","brand":"Shimano GRX","offers":[{"title":"Black \/ Double \/ Left","offer_id":47380193378479,"sku":"RX815820LR","price":340.17,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/2003\/4223\/files\/rx815820lra.jpg?v=1787135442","url":"https:\/\/www.swinnertoncycles.co.uk\/products\/shimano-grx-st-rx815-grx-di2-2-speed-sti-bled-with-br-rx820-calliper","provider":"Swinnerton Cycles","version":"1.0","type":"link"}