Shimano Ultegra ST-R8170-LF Di2 Shift/Brake Lever - Left, 2x, Black first-responder-assistance and there are no compatibility

and there are no compatibility issues

With Ride-Tuned external features and patent pending internals

With its slim design

resulting in twice the surface area for increased traction and grip

works better in dry conditions

Shimano Ultegra ST-R8170-LF Di2 Shift/Brake Lever - Left, 2x, Black first-responder-assistance and there are no compatibilityShimano'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