{"product_id":"shimano-grx-di2-fd-rx815-braze-on","title":"Shimano GRX Di2 FD-RX815 (Braze-On)","description":"\u003cp data-path-to-node=\"2\"\u003e\u003cb data-path-to-node=\"2\" data-index-in-node=\"0\"\u003eDigital Precision for Dirty Roads.\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"3\"\u003eThe FD-RX815 is a masterpiece of electronic integration. It features a \u003cb data-path-to-node=\"3\" data-index-in-node=\"71\"\u003e+2.5mm chainline\u003c\/b\u003e compared to traditional road front derailleurs, providing the critical tire clearance needed for high-volume 700c and 650b gravel tires. Because it is a Di2 component, it eliminates the \"heavy\" feeling of mechanical front shifting. With a high-torque motor and \u003cb data-path-to-node=\"3\" data-index-in-node=\"349\"\u003eauto-trim technology\u003c\/b\u003e, it perfectly aligns itself to prevent chain rub, allowing you to focus entirely on the trail ahead.\u003c\/p\u003e\n\u003cp data-path-to-node=\"4\"\u003e\u003cb data-path-to-node=\"4\" data-index-in-node=\"0\"\u003eWhy the FD-RX815 is the Ultimate Gravel Upgrade:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"5\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,0,0\"\u003e\u003cb data-path-to-node=\"5,0,0\" data-index-in-node=\"0\"\u003eIncreased Tire Clearance:\u003c\/b\u003e The +2.5mm outboard chainline is specifically designed to accommodate the wide tires (up to 45mm+) common on modern gravel frames, preventing the derailleur from interfering with your rubber.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,1,0\"\u003e\u003cb data-path-to-node=\"5,1,0\" data-index-in-node=\"0\"\u003eInstant, High-Torque Shifting:\u003c\/b\u003e Experience effortless shifts even when pedaling uphill or through thick mud. The Di2 motor provides significantly more force than a manual cable, ensuring the chain moves precisely every time you tap the button.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,2,0\"\u003e\u003cb data-path-to-node=\"5,2,0\" data-index-in-node=\"0\"\u003eAuto-Trim Technology:\u003c\/b\u003e The derailleur automatically adjusts its position based on the rear gear you've selected. This eliminates \"chain rub\" across the entire 11Speed range, providing a silent and efficient drivetrain in every gear combination.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,3,0\"\u003e\u003cb data-path-to-node=\"5,3,0\" data-index-in-node=\"0\"\u003eSynchronized Shifting Compatible:\u003c\/b\u003e Use the \u003cb data-path-to-node=\"5,3,0\" data-index-in-node=\"42\"\u003eE-TUBE PROJECT\u003c\/b\u003e app to set up \"Full Sync\" or \"Semi-Sync\" shifting. The system can automatically shift the front derailleur for you as you move through the rear cassette, keeping your cadence smooth and efficient.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,4,0\"\u003e\u003cb data-path-to-node=\"5,4,0\" data-index-in-node=\"0\"\u003eRobust 17T Total Capacity:\u003c\/b\u003e Designed to work perfectly with the 48-31T GRX cranksets, offering a massive gear range that can handle both high-speed descents and the steepest backcountry climbs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,5,0\"\u003e\u003cb data-path-to-node=\"5,5,0\" data-index-in-node=\"0\"\u003eWeather-Sealed Reliability:\u003c\/b\u003e Fully waterproof and designed to live in the mud. The electronic internals are sealed against the elements, ensuring consistent performance through rain, snow, and stream crossings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"6\"\u003e\u003cb data-path-to-node=\"6\" data-index-in-node=\"0\"\u003eTechnical Specifications:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"7\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,0,0\"\u003e\u003cb data-path-to-node=\"7,0,0\" data-index-in-node=\"0\"\u003eModel:\u003c\/b\u003e FD-RX815\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,1,0\"\u003e\u003cb data-path-to-node=\"7,1,0\" data-index-in-node=\"0\"\u003eSeries:\u003c\/b\u003e GRX DI2 (11Speed)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,2,0\"\u003e\u003cb data-path-to-node=\"7,2,0\" data-index-in-node=\"0\"\u003eAction:\u003c\/b\u003e Down-Swing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,3,0\"\u003e\u003cb data-path-to-node=\"7,3,0\" data-index-in-node=\"0\"\u003eMounting:\u003c\/b\u003e Braze-On (Standard)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,4,0\"\u003e\u003cb data-path-to-node=\"7,4,0\" data-index-in-node=\"0\"\u003eTotal Capacity:\u003c\/b\u003e 17T (48-31T Crank compatible)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,5,0\"\u003e\u003cb data-path-to-node=\"7,5,0\" data-index-in-node=\"0\"\u003eWeight:\u003c\/b\u003e ~131g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,6,0\"\u003e\u003cb data-path-to-node=\"7,6,0\" data-index-in-node=\"0\"\u003eConnectivity:\u003c\/b\u003e E-Tube SD50 port\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-path-to-node=\"8\"\u003e\n\u003cp data-path-to-node=\"9,0\"\u003e\u003cb data-path-to-node=\"9,0\" data-index-in-node=\"0\"\u003eThe Alegro Perspective:\u003c\/b\u003e In our workshop, the FD-RX815 is the hero of \"modern gravel\" builds. Front shifting is historically the weak point of gravel drivetrains due to mud and cable friction, but Di2 completely removes those variables. If you're building up a \u003cb data-path-to-node=\"9,0\" data-index-in-node=\"260\"\u003eBrodie Romax Adventure\u003c\/b\u003e or a \u003cb data-path-to-node=\"9,0\" data-index-in-node=\"288\"\u003eWinspace G3\u003c\/b\u003e, this derailleur is what makes the bike feel truly premium. It’s silent, it’s powerful, and once it’s set up, you’ll never have to touch it again.\u003c\/p\u003e\n\u003cp data-path-to-node=\"10\"\u003e\u003cb data-path-to-node=\"10\" data-index-in-node=\"0\"\u003eClean Clearance. Digital Accuracy. Master your Front Shifting with Shimano GRX Di2.\u003c\/b\u003e\u003c\/p\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":48590637990111,"sku":"IFDRX815F","price":345.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/5452\/3103\/files\/240302-01_1.jpg?v=1773510359","url":"https:\/\/alegrocycles.com\/products\/shimano-grx-di2-fd-rx815-braze-on","provider":"Alegro Cycles","version":"1.0","type":"link"}