ST-R8170, Ultegra, Wireless Position:Rear with easy access and zero

with easy access and zero drag

Quick and easy assembly

0 or later of the Shokz App to unlock even more ways to customize your OpenSwim Pro

Shimano Dura Ace RD-9070 Pulley set

Fusion Alloy 2023

ST-R8170, Ultegra, Wireless Position:Rear with easy access and zeroShimano'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