SHIMANO ULTEGRA R8170 Shifter Shift Hydraulic Disc Brake Lever 2*12S

The shift / brake levers ST-R8170 are operated by a button cell CR1632, which lasts at least 1.5 years and can be replaced by yourself. They communicate using a wireless protocol with the rear derailleur, which in turn is wired to the battery and indirectly to the front derailleur. Not only do you benefit from lightning-fast switching operations and a tidy cockpit, installation is also much easier without cables. Alternatively, you can also use the dual control levers wired. The ergonomics have been further optimized compared to previous models and allow very comfortable gripping. It is also possible to communicate with a third-party device via special buttons, which are communicated via the switchgear as a wireless unit. In terms of braking performance, these Ultegra STIs go one step further than before: Thanks to Servo Wave technology, the full braking force is available to you more quickly, but it can also be better controlled at the same time. In addition to the reach, you can adjust the free travel, both using a 2 mm Allen key. The venting process using the completely redesigned funnel (not included) is also no problem. The brake levers of the ST-R8170 are made of lightweight aluminum, the handle bodies are made of carbon, which also saves weight.