{"product_id":"shimano-dura-ace-di2-rd-r9250-12speed","title":"Shimano Dura Ace Di2 RD-R9250 (12Speed)","description":"\u003cp data-path-to-node=\"2\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"2\"\u003eThe Central Processing Brain. Zero-Hesitation Shifting.\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"3\"\u003eThe foundational engineering leap for the \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003ca class=\"ng-star-inserted\" href=\"https:\/\/bike.shimano.com\" rel=\"noopener\" target=\"_blank\"\u003eShimano Dura-Ace RD-R9250 Derailleur\u003c\/a\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e is the radical elimination of external junction boxes. By embedding an ultra-fast \u003cb data-index-in-node=\"161\" data-path-to-node=\"3\"\u003ewireless receiver, a D-FLY ANT+\/Bluetooth communication antenna, a functional mode-switch button, and the system charging port directly into the derailleur chassis\u003c\/b\u003e, Shimano completely streamlined the modern superbike cockpit. It wirelessly receives shift commands directly from your brake hoods, executing shifts across the cassette with surgical precision under any torque load.\u003c\/p\u003e\n\u003cp data-path-to-node=\"4\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"4\"\u003eWhy the Dura-Ace R9250 stands at the Top of the Podium:\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-index-in-node=\"0\" data-path-to-node=\"5,0,0\"\u003e58% Faster Rear Actuation:\u003c\/b\u003e Reengineered high-torque motors drop shifting lag time to a mere fraction of a second, yielding the fastest, crispest electronic shifts ever recorded in cycling history.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,1,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,1,0\"\u003eIntegrated Wireless System Hub:\u003c\/b\u003e Consolidates your charging port, system pairing buttons, D-FLY wireless diagnostics, and an multi-color LED battery\/diagnostic status indicator directly into the rear knuckle.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,2,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,2,0\"\u003eCarbon Fiber Composite (CFRP) Construction:\u003c\/b\u003e Both the inner and outer cage plates are forged from ultra-high-modulus Carbon Fiber Reinforced Polymer, slashing structural weight down to an astonishing \u003cb data-index-in-node=\"199\" data-path-to-node=\"5,2,0\"\u003e215g\u003c\/b\u003e while boosting lateral stiffness.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,3,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,3,0\"\u003eUniversal Single-Cage Versatility:\u003c\/b\u003e Eliminates the confusion of short versus long cages. A single, aerodynamically optimized medium-cage design flawlessly accommodates a wide spectrum of gear configurations, from a flat-land \u003cb data-index-in-node=\"224\" data-path-to-node=\"5,3,0\"\u003e11-28T racing block up to an alpine-taming 11-34T climbing cassette\u003c\/b\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,4,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,4,0\"\u003eShimano Shadow RD Geometry:\u003c\/b\u003e Features an ultra-low profile architecture that tucks the derailleur body tightly beneath the rear chainstay. This shields the expensive component from structural damage during crashes and significantly minimizes aerodynamic drag.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,5,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,5,0\"\u003eE-TUBE App Customization:\u003c\/b\u003e Pairs seamlessly with your smartphone, allowing you to customize your multi-shift speeds, re-map button configurations, and activate Synchronized or Semi-Synchronized automated front derailleur trimming modes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"6\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"6\"\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-index-in-node=\"0\" data-path-to-node=\"7,0,0\"\u003eModel Code:\u003c\/b\u003e RD-R9250\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,2,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"7,2,0\"\u003eSpeed Compatibility:\u003c\/b\u003e 12Speed Road Di2 Only\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,3,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"7,3,0\"\u003eCage Length:\u003c\/b\u003e Medium Cage\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,4,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"7,4,0\"\u003eTop Sprocket Max \/ Min:\u003c\/b\u003e 14T \/ 11T\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,5,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"7,5,0\"\u003eLow Sprocket Max \/ Min:\u003c\/b\u003e 34T \/ 28T\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,6,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"7,6,0\"\u003eTotal Capacity (Teeth Wrap):\u003c\/b\u003e 37T\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,7,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"7,7,0\"\u003eMaterial Architecture:\u003c\/b\u003e CFRP Carbon Fiber Plates, Cold-Forged Aluminum Body\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,8,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"7,8,0\"\u003eWeight:\u003c\/b\u003e Featherlight ~215g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,9,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"7,9,0\"\u003eConnectivity Wire Compatibility:\u003c\/b\u003e EW-SD300 Slim Series\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"9\"\u003e \u003c\/p\u003e\n\u003cp data-path-to-node=\"9,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"9,0\"\u003eThe Alegro Perspective:\u003c\/b\u003e The R9250 completely redefined how we build premium superbikes like the \u003cb data-index-in-node=\"113\" data-path-to-node=\"9,0\"\u003eFiftyOne Sika\u003c\/b\u003e. By moving the entire electronic junction core and charging port out of the seatpost or handlebar bar-ends and cleanly packing it into the rear derailleur, Shimano cleared away immense clutter. Maintenance is wonderfully straightforward: you plug your charger straight into the back of your bike. Out on the asphalt, the speed is mind-boggling. When you are out of the saddle, throwing down raw sprint power, it shifts instantaneously without a single skip or pop. If you are constructing an absolute dream rig, this is the definitive gold standard.\u003c\/p\u003e\n\u003cp data-path-to-node=\"10\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"10\"\u003eWireless Mastery. Podiums Unleashed. Command the Drivetrain with Shimano Dura-Ace.\u003c\/b\u003e\u003c\/p\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":50559233294559,"sku":"IRDR9250F","price":1180.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/5452\/3103\/files\/260262-03_4_1.jpg?v=1783776152","url":"https:\/\/alegrocycles.com\/products\/shimano-dura-ace-di2-rd-r9250-12speed","provider":"Alegro Cycles","version":"1.0","type":"link"}