{"product_id":"shimano-ultegra-st-r8171-ultegra-hydraulic-di2-sti-for-drop-bar-without-e-tube-wires","title":"Shimano Ultegra ST-R8171 Hydraulic Di2 Wireless STI Levers for Drop Bar Bikes","description":"\u003cp\u003eExperience unmatched control and precision with the Shimano Ultegra ST-R8171 hydraulic Di2 STI levers, designed specifically for drop bars and delivering wireless connectivity without the need for E-tube wires. These cutting-edge components combine hydraulic braking power with seamless electronic shifting, ensuring smooth gear changes and confident stopping in every riding condition. The lightweight yet robust construction offers an ergonomic fit with finely tuneable reach adjusters, making them suitable for all hand sizes and riding styles.\u003c\/p\u003e\n\n\u003cp\u003eEquipped with the advanced Di2 technology, shifting becomes effortless and precise, allowing you to change gears with just a light touch, as soft as a mouse click. The fully programmable synchro and semi-synchro shifting modes enable a tailored experience where a single shifter controls both front and rear derailleurs, optimizing gear ratios automatically to match your cadence and terrain. Hydraulic Servo Wave brakes provide powerful and modulated stopping performance with less effort, especially from the hood position, and feature a hydraulic reservoir tank that auto-adjusts pad to rotor clearance, maintaining consistent braking as pads wear.\u003c\/p\u003e\n\n\u003cp\u003eDesigned for riders seeking high-performance components, these Shimano Ultegra ST-R8171 levers integrate seamlessly with other \u003ca href=\"\/collections\/shimano-ultegra\"\u003eShimano Ultegra family products\u003c\/a\u003e and provide wireless reliability to enhance your ride. Their long-lasting CR1632 batteries ensure endurance, typically lasting 1.5 to 2 years, minimizing maintenance interruptions. Whether upgrading your road bike or building a new setup, these STI levers deliver superior transmission and braking performance for competitive and recreational cyclists alike.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It’s Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eEffortless and precise electronic shifting with wireless connectivity\u003c\/li\u003e\n  \u003cli\u003ePowerful hydraulic braking with Servo Wave technology for enhanced modulation\u003c\/li\u003e\n  \u003cli\u003eCustomizable shifting modes including full and semi-synchronized options\u003c\/li\u003e\n  \u003cli\u003eErgonomic design with adjustable reach for a comfortable grip on all hand sizes\u003c\/li\u003e\n  \u003cli\u003eReliable long battery life minimizing downtime and maintenance\u003c\/li\u003e\n  \u003cli\u003eSeamless integration with Shimano Ultegra groupsets and compatible components\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat It’s NOT Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBikes without drop bars, as the levers are designed specifically for drop bar setups\u003c\/li\u003e\n  \u003cli\u003eRiders seeking purely mechanical shifting systems without electronic components\u003c\/li\u003e\n  \u003cli\u003eUsers requiring wired E-tube connectivity, since this model operates wirelessly\u003c\/li\u003e\n  \u003cli\u003eThose who prefer brake levers without hydraulic systems or Servo Wave technology\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAre these levers compatible with all Shimano Di2 derailleurs?\u003c\/strong\u003e\u003cbr\u003eThey are fully compatible with Shimano Ultegra Di2 front and rear derailleurs designed for wireless systems, but always check your specific groupset model for complete compatibility.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow often do I need to replace the batteries?\u003c\/strong\u003e\u003cbr\u003eThe CR1632 batteries typically last between 1.5 to 2 years depending on usage, providing long-term reliability with minimal maintenance.\u003c\/p\u003e","brand":"Shimano Ultegra","offers":[{"title":"Black \/ Double \/ Left","offer_id":47380207042735,"sku":"STR8171L","price":345.22,"currency_code":"GBP","in_stock":false},{"title":"Black \/ 12-Speed \/ Right","offer_id":47380207075503,"sku":"STR8171R","price":345.22,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/2003\/4223\/files\/str8170l.jpg?v=1787136148","url":"https:\/\/www.swinnertoncycles.co.uk\/products\/shimano-ultegra-st-r8171-ultegra-hydraulic-di2-sti-for-drop-bar-without-e-tube-wires","provider":"Swinnerton Cycles","version":"1.0","type":"link"}