{"product_id":"st-r8170","title":"ST-R8170 (ULTEGRA)","description":"\u003ch3 class=\"list_anchor_cs_h3\"\u003eSHIMANO ST-R8170 (ULTEGRA) | 12-speed Di2 Hydraulic STI Lever with Evolved Operability and Braking Power\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eInstantaneous Confidence in Your Grip. Next-Generation ULTEGRA Di2 Control Performance.\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe \"ST-R8170\" from the SHIMANO ULTEGRA R8100 series is a dual control lever for hydraulic disc brakes compatible with 2x12-speed Di2 systems.\u003c\/p\u003e\n\u003cp\u003eWireless connectivity provides a clean cockpit area, improving aerodynamics and maintainability. While maintaining shifting performance, it achieves a more refined road bike system.\u003c\/p\u003e\n\u003cp\u003eFurthermore, based on feedback from professional riders, the bracket shape and lever position have been revised, significantly improving grip comfort and control performance. Brake lever stroke and modulation performance have also been optimized, providing a high level of confidence during high-speed riding and technical descents.\u003c\/p\u003e\n\u003cp\u003eInheriting the latest technology from DURA-ACE, this high-performance Di2 STI lever is suitable for a wide range of uses, from racing to long-distance rides.\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\u003e12-speed Di2 dual control lever from the ULTEGRA R8100 series\u003c\/li\u003e\n\n\u003cli\u003eHydraulic disc brake compatible model\u003c\/li\u003e\n\n\u003cli\u003eClean cockpit achieved through wireless connection\u003c\/li\u003e\n\n\u003cli\u003eNew ergonomic design reflecting feedback from professional riders\u003c\/li\u003e\n\n\u003cli\u003eUpward-extending bracket shape improves comfort in aero position\u003c\/li\u003e\n\n\u003cli\u003eLight and smooth lever operation\u003c\/li\u003e\n\n\u003cli\u003eImproved brake modulation performance\u003c\/li\u003e\n\n\u003cli\u003eFeatures Servo Wave mechanism\u003c\/li\u003e\n\n\u003cli\u003eSupports both wired and wireless Di2 connections\u003c\/li\u003e\n\n\u003cli\u003eSupports satellite shifter connection\u003c\/li\u003e\n\n\u003cli\u003eLong battery life of approximately 1.5 to 2 years with CR1632 battery\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: ULTEGRA R8100\u003c\/li\u003e\n\n\u003cli\u003eModel: ST-R8170\u003c\/li\u003e\n\n\u003cli\u003eCompatible speeds: 2x12 speed\u003c\/li\u003e\n\n\u003cli\u003eShifter type: Dual Control Lever\u003c\/li\u003e\n\n\u003cli\u003eCompatible brakes: Hydraulic disc brakes\u003c\/li\u003e\n\n\u003cli\u003eRecommended caliper: BR-R8170\u003c\/li\u003e\n\n\u003cli\u003eCompatible hose: SM-BH90-JK-SSR\u003c\/li\u003e\n\n\u003cli\u003eHose joint: Straight\u003c\/li\u003e\n\n\u003cli\u003eOil: Shimano Mineral Oil\u003c\/li\u003e\n\n\u003cli\u003eReach adjust mechanism: Included\u003c\/li\u003e\n\n\u003cli\u003eFree stroke adjustment: Supported\u003c\/li\u003e\n\n\u003cli\u003eServo Wave: Included\u003c\/li\u003e\n\n\u003cli\u003eSD300 port: 1\u003c\/li\u003e\n\n\u003cli\u003eSD300 satellite shifter port: 1\u003c\/li\u003e\n\n\u003cli\u003eBattery: CR1632\u003c\/li\u003e\n\n\u003cli\u003eAverage weight: Approx. 391g (pair)\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhat is particularly noticeable in terms of evolution with the R8100 generation is the grip comfort and brake control of the ST-R8170.\u003c\/p\u003e\n\u003cp\u003eThe bracket shape feels very natural, giving the impression that your hands will not tire easily even during long rides. The brakes are also easy to control from the moment you grip them, providing a sense of security even on descents or in wet weather.\u003c\/p\u003e\n\u003cp\u003eThe shifting response of Di2 is, of course, excellent, and the feeling of precise shifting the moment you press the lever is something you won't want to give up once you've experienced it.\u003c\/p\u003e\n\u003cp\u003eThis latest generation ULTEGRA STI lever is recommended not only for race-oriented riders but also for long-distance riders who prioritize comfort and operability.\u003c\/p\u003e","brand":"SHIMANO","offers":[{"title":"Left lever \/ In-store stock","offer_id":50119712801043,"sku":"4550170240707","price":46604.0,"currency_code":"JPY","in_stock":false},{"title":"Left lever \/ Order from manufacturer (approx. 10 days)","offer_id":50119712866579,"sku":"oty-4550170240707","price":46604.0,"currency_code":"JPY","in_stock":true},{"title":"Right lever \/ In-store stock","offer_id":50119712833811,"sku":"4550170240684","price":46604.0,"currency_code":"JPY","in_stock":false},{"title":"Right lever \/ Order from manufacturer (approx. 10 days)","offer_id":50119712899347,"sku":"oty-4550170240684","price":46604.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0818\/4237\/2883\/files\/ST-R8170_1.jpg?v=1732527860","url":"https:\/\/store-eirin-jp.com\/en\/products\/st-r8170","provider":"京都の自転車屋 CYCLE SHOP eirin ＆ サイクルハテナ","version":"1.0","type":"link"}