ST-R8170, Ultegra, Wireless Position:Rear Position: Defense

Position: Defense

The special "Y" head design puts more material where it's needed for strength and durability

with easy access and zero drag

The mirrored surface makes this mask a smart option for outdoor swimming and triathletes

Frame: HM Graphite

ST-R8170, Ultegra, Wireless Position:Rear Position: DefenseShimano'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