{"product_id":"sti-lvr-grx-strx825-brrx820bled-2s-lh-rr","title":"ST-RX825 GRX Di2 2-speed STI bled with BR-RX820 calliper, left rear","description":"\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eShimano GRX Di2 825 2x12 Gravel Groupset | 11–36T or 11–34T Cassette – Fitted by Bike Clinique\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eIf you want the ultimate in gravel-specific performance, the new Shimano GRX Di2 825 2x12 is the upgrade that delivers. With full manufacturer training and extensive hands-on experience fitting GRX Di2, Bike Clinique gives you a flawless install and expert support—so you can focus on your ride, not your setup.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eWhy Choose GRX Di2 825 at Bike Clinique?\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eGRX was the world’s first gravel-specific groupset, and the latest Di2 825 brings it right up to date with 12-speed, wireless shifting, and a design tuned for real-world adventure. Enjoy effortless, instant gear changes at the push of a button—no cables, no fuss, just smooth, precise shifting every time. The system is fully customisable via the Shimano E-Tube app, so you can tailor shifting logic, button functions, and even run fully or semi-synchronous modes for a truly dialled cockpit.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eWhat’s Included:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eShifters\/Brakes:\u003c\/span\u003e\u003cspan\u003e GRX Di2 ST-RX825 levers with non-slip, gravel-optimised ergonomics and fully wireless shifting. Paired with flat-mount BR-RX820 calipers for confident, powerful braking in all conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eRotors:\u003c\/span\u003e\u003cspan\u003e Ultegra RT-CL800 Center Lock, 160mm front and rear, with Ice-Tech cooling for consistent, fade-free stopping on long descents.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eCrankset:\u003c\/span\u003e\u003cspan\u003e GRX FC-RX820-2, 2x12-speed, 48\/31T chainrings, available in 170, 172.5, or 175mm. Narrow 151mm Q-factor for comfort and clearance with wide tyres.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eFront Derailleur:\u003c\/span\u003e\u003cspan\u003e GRX Di2 FD-RX825, 2x12, wireless, with auto-trim for silent, perfect shifts every time.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eRear Derailleur:\u003c\/span\u003e\u003cspan\u003e GRX Di2 RD-RX825 Shadow+, 2x12, wireless, with chain stabilisation for rough terrain and compatibility with 11–34T or 11–36T cassettes.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eCassette:\u003c\/span\u003e\u003cspan\u003e CS-HG710, 12-speed, 11–36T or 11–34T, Hyperglide+ for seamless, quiet shifting even under load.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eChain:\u003c\/span\u003e\u003cspan\u003e Deore XT\/Ultegra CN-M8100, 12-speed, 126 links, with chain lock and SIL-TEC coating for smooth, long-lasting performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eBattery \u0026amp; Charging:\u003c\/span\u003e\u003cspan\u003e BT-DN300 internal battery (hidden in seatpost or steerer), EW-EC300 charging cable, and EW-SD300-I internal E-Tube cabling for a clean, integrated look.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eSpecs at a Glance:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e2x12-speed (wireless electronic)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eCrank Lengths:\u003c\/span\u003e\u003cspan\u003e 170, 172.5, 175mm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eChainring:\u003c\/span\u003e\u003cspan\u003e 48\/31T\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eCassette:\u003c\/span\u003e\u003cspan\u003e 11–36T or 11–34T\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eBrake:\u003c\/span\u003e\u003cspan\u003e Hydraulic disc, flat mount, 160mm rotors\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eFreehub:\u003c\/span\u003e\u003cspan\u003e Shimano Road\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\" aria-level=\"1\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eColor:\u003c\/span\u003e\u003cspan\u003e Black, grey, silver\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eHow Does It Ride?\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eGRX Di2 825 is all about smooth, lightning-fast shifting, silent running, and total confidence on any surface. The ergonomics are tuned for gravel, the gearing is perfect for big climbs and fast flats, and the braking is powerful and consistent—even in the worst conditions. Riders love the customisable controls, the clean cockpit, and the peace of mind that comes with a pro-level install.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eWhy Trust Bike Clinique?\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eWith full Shimano manufacturer training and real-world experience fitting GRX Di2, you get expert advice, a perfect install, and ongoing support. We’ll check your frame compatibility, talk through gearing and setup options, and give you a clear estimate before any work begins.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eReady to experience the best in gravel performance?\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eBook a consultation, schedule your upgrade online, or call us on 07951125843. Pop into our Wimbledon workshop for a demo, get honest, jargon-free advice, and let us help you unlock the best of Shimano GRX for your next adventure.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bike Clinique","offers":[{"title":"Double \/ Black \/ Black","offer_id":48615653114164,"sku":"RX825LR","price":399.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/8116\/3060\/files\/st-rx825-grx-di2-2-speed-sti-bled-with-br-rx820-calliper-left-rear-5646251.webp?v=1763803704","url":"https:\/\/bikeclinique.com\/products\/sti-lvr-grx-strx825-brrx820bled-2s-lh-rr","provider":"Bike Clinique","version":"1.0","type":"link"}