{"product_id":"shimano-st-rx815-grx-di2-11-speed-hydraulic-disc-brake-sti-lever-for-gravel-bikes","title":"Shimano ST-RX815 GRX Di2 11-Speed Hydraulic Disc Brake STI Lever for Gravel Bikes","description":"\u003cp\u003eThe Shimano St-Rx815 GRX Di2 Shift Hydraulic STI Lever is engineered specifically for gravel enthusiasts seeking precision and control on diverse terrains. Featuring gravel-specific ergonomics, this component offers an optimized gearing system combined with a quiet and stable drivetrain, ensuring a smooth ride even on the roughest paths. The hydraulic disc brake system delivers powerful, modulated braking with minimal effort, enhancing safety and confidence.\u003c\/p\u003e\n\n\u003cp\u003eDesigned with rider comfort in mind, the higher brake lever axis and curved lever improve grip on uneven surfaces and steep descents, while the raised hood head and recessed finger notch prevent hand slippage. Anti-slip textures and specialized brake lever coatings increase braking efficiency and reduce fatigue during long rides. Compatible with 11-speed E-tube Di2 systems, this left-hand 2-speed lever is a perfect upgrade for serious gravel riders.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It’s Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDelivering precise shifting and reliable braking on gravel and mixed terrain\u003c\/li\u003e\n  \u003cli\u003eProviding ergonomic comfort for long-distance rides\u003c\/li\u003e\n  \u003cli\u003eEnhancing control and confidence on technical descents\u003c\/li\u003e\n  \u003cli\u003eSeamlessly integrating with 11-speed E-tube Di2 electronic drivetrains\u003c\/li\u003e\n  \u003cli\u003eReducing hand fatigue through anti-slip design features\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat It’s NOT Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRiders seeking a mechanical shifting system instead of electronic\u003c\/li\u003e\n  \u003cli\u003eUse on road bikes without gravel-specific geometry may reduce ergonomic benefits\u003c\/li\u003e\n  \u003cli\u003eCompatibility limited to Shimano Di2 electronic drivetrains\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs this lever compatible with non-Di2 mechanical groupsets?\u003c\/strong\u003e\u003cbr\u003eNo, the Shimano St-Rx815 GRX lever is designed exclusively for 11-speed Di2 electronic drivetrains and will not work with mechanical shifting systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this lever on a standard road bike?\u003c\/strong\u003e\u003cbr\u003eWhile compatible, its gravel-specific ergonomics are optimized for gravel and mixed terrain bikes, so you may not experience the full ergonomic benefits on a traditional road bike.\u003c\/p\u003e","brand":"Shimano GRX","offers":[{"title":"Double \/ Black \/ Left","offer_id":45735531380911,"sku":"STRX815L","price":238.18,"currency_code":"GBP","in_stock":true},{"title":"11-Speed \/ Black \/ Right","offer_id":45735531413679,"sku":"STRX815R","price":238.18,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/2003\/4223\/files\/strx815l.jpg?v=1768526448","url":"https:\/\/www.swinnertoncycles.co.uk\/products\/shimano-st-rx815-grx-di2-11-speed-hydraulic-disc-brake-sti-lever-for-gravel-bikes","provider":"Swinnerton Cycles","version":"1.0","type":"link"}