ST-R8170, Ultegra, Wireless Position:Rear the sole allows natural foot

the sole allows natural foot movement and comfortable walking on mixed terrain

Pre-assembled with SM-BH90-SBM high power hose

15mm and 1" sockets (The 1" socket fits various Park Tool Freewheel

126 links + missing link

Elastane (Spandex): 20 %

ST-R8170, Ultegra, Wireless Position:Rear the sole allows natural footShimano'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