{"product_id":"rd-r9250","title":"RD-R9250 (DURA-ACE)","description":"\u003ch3 class=\"list_anchor_cs_h3\"\u003eSHIMANO RD-R9250 (DURA-ACE) | Shimano's fastest-shifting 12-speed Di2 rear derailleur in history\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eA split-second shift can decide the race. DURA-ACE has been refined for precisely that.\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe \"RD-R9250\" from the SHIMANO DURA-ACE R9200 series is a 12-speed rear derailleur that forms the core of the wireless Di2 system.\u003c\/p\u003e\n\u003cp\u003eIt achieves approximately 58% faster shifting performance compared to the conventional RD-R9150, making it Shimano's fastest rear shifting in history. It responds instantly to attacks, sprints, and sudden changes in gradient during a race, transmitting the rider's intentions directly to the drivetrain.\u003c\/p\u003e\n\u003cp\u003eFurthermore, the wireless unit, charging port, and switch are integrated into a compact body. It supports Bluetooth® LE and ANT communication, allowing for connectivity with E-TUBE PROJECT and cycling computers. This component, which can be called the brain of DURA-ACE, combines high shifting performance with excellent system integration.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 class=\"list_anchor_cs_h3\"\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003eSHIMANO DURA-ACE R9200 series 12-speed Di2 rear derailleur\u003c\/li\u003e\n\n\u003cli\u003eShimano's fastest shifting performance in history, approx. 58% faster than RD-R9150\u003c\/li\u003e\n\n\u003cli\u003eCompact design integrating wireless unit, charging port, and switch\u003c\/li\u003e\n\n\u003cli\u003eSupports Bluetooth® LE and ANT communication\u003c\/li\u003e\n\n\u003cli\u003eVarious customizations possible with E-TUBE PROJECT\u003c\/li\u003e\n\n\u003cli\u003eCompatible with E-TUBE RIDE for linking with ride data\u003c\/li\u003e\n\n\u003cli\u003eLED indicator for checking battery level and pairing status\u003c\/li\u003e\n\n\u003cli\u003eSupports wide gear range up to 34T\u003c\/li\u003e\n\n\u003cli\u003eHigh stability with SHIMANO SHADOW RD design\u003c\/li\u003e\n\n\u003cli\u003eLightweight due to CFRP rear derailleur plate\u003c\/li\u003e\n\n\u003cli\u003eBearing adopted for guide and tension pulleys\u003c\/li\u003e\n\n\u003cli\u003eWidely applicable from road racing to long rides\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 class=\"list_anchor_cs_h3\"\u003eSPEC\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003eSeries: DURA-ACE R9200\u003c\/li\u003e\n\n\u003cli\u003eModel: RD-R9250\u003c\/li\u003e\n\n\u003cli\u003eCompatible speeds: 12-speed\u003c\/li\u003e\n\n\u003cli\u003eType: Di2 electronic rear derailleur\u003c\/li\u003e\n\n\u003cli\u003eMount: Braze-on \/ Direct mount compatible\u003c\/li\u003e\n\n\u003cli\u003eMax front difference: 16T\u003c\/li\u003e\n\n\u003cli\u003eTotal capacity: 37T\u003c\/li\u003e\n\n\u003cli\u003eCompatible low sprocket max: 34T\u003c\/li\u003e\n\n\u003cli\u003eCompatible low sprocket min: 30T\u003c\/li\u003e\n\n\u003cli\u003eCompatible top sprocket: 11T\u003c\/li\u003e\n\n\u003cli\u003ePulley teeth: 11T\u003c\/li\u003e\n\n\u003cli\u003eCommunication standards: Bluetooth® LE \/ ANT\u003c\/li\u003e\n\n\u003cli\u003eSystem status LED included\u003c\/li\u003e\n\n\u003cli\u003eCharging port: 1\u003c\/li\u003e\n\n\u003cli\u003eCompatible charging cable: EW-EC300\u003c\/li\u003e\n\n\u003cli\u003eAverage weight: Approx. 215g\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis is one of the components in the R9200 generation where you can most easily feel the evolution.\u003c\/p\u003e\n\u003cp\u003eThe shifting speed is truly fast, and the response, especially under high load or when riding at race pace, is overwhelming. There is almost no perceptible time lag in gear changes, allowing for smooth shifting without interrupting pedaling.\u003c\/p\u003e\n\u003cp\u003eFurthermore, system integration via Bluetooth® and ANT compatibility is a major attraction. Connecting to a cycling computer and changing settings with E-TUBE can be done easily.\u003c\/p\u003e\n\u003cp\u003eIt is a core DURA-ACE component, essential for building the finest road bike.\u003c\/p\u003e","brand":"SHIMANO","offers":[{"title":"In-store stock","offer_id":50122579018003,"sku":"4550170240950","price":101976.0,"currency_code":"JPY","in_stock":false},{"title":"Manufacturer order (approx. 10 days)","offer_id":50122579050771,"sku":"oty-4550170240950","price":101976.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/4237\/2883\/files\/RD-R9250_1.jpg?v=1732619027","url":"https:\/\/store-eirin-jp.com\/en\/products\/rd-r9250","provider":"京都の自転車屋 CYCLE SHOP eirin ＆ サイクルハテナ","version":"1.0","type":"link"}