Shimano's Ultegra ST-R8170 brake levers bring enhanced modulation and control to every ride by employing Shimano's proven SERVO-WAVE technology. The Di2 platform untethers the shifters while delivering fast and reliable wireless shifting. Your time on the bike is precious let Shimano make it even better.The wireless connection provides a clean cockpit enhancing the aerodynamic effect and easy maintenance Unparalleled ergonomics engineering refined with feedback from professional riders Raised hood peak improves ergonomics Brake control is optimized with light and smooth lever action Enhanced modulation thanks to an expanded braking control area Compatible with wireless or wired connection High electronic energy efficiency with 1.5 to 2 years of battery life from CR1632 shifter batteries Can be used with additional satellite shifters
| Brake Lever Actuation | Hydraulic |
| Rotor Included | No |
| Brake Lever Use | Right |
| Front Der/Shifter Compatibility | Shimano Road Di2 |
| Color | Black |
| Hydraulic Fluid Type | Mineral Oil |
| Adjustable Reach | Yes |
| Defined Color | Black |
| Position | Right |
| Speeds | 12-Speed |
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