ST-R8170, Ultegra, Wireless Position:Rear Lens functions as push-button

Lens functions as push-button

enabling precise positioning of arm cups

including Torpedo Versa Systems

and mounting bolts

ST-R8170, Ultegra, Wireless Position:Rear Lens functions as push-buttonShimano's new ULTEGRA ST R8170 brake levers bring enhanced modulation and control to every ride by employing Shimano's proven SERVO WAVE technology. The all new Di2 platform, used on both DURA ACE and ULTEGRA, untethers the shifters while delivering our fastest, most reliable wireless shifting. Your time on the bike is precious, let Shimano make it even better. BENEFIT Clean Cockpit: Wireless connection enhances the aerodynamic effect and easy