Shimano Ultegra ST-R8170-LF Di2 Shift/Brake Lever - Left, 2x, Black first-responder-assistance resulting in twice the surface

resulting in twice the surface area for increased traction and grip

With its slim design

supreme comfort and grip are added to the athletic character

works better in dry conditions

Protection with stabilization control without extra weight

Shimano Ultegra ST-R8170-LF Di2 Shift/Brake Lever - Left, 2x, Black first-responder-assistance resulting in twice the surfaceShimano'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