R8170 Ultegra Di2 Shifter and Brake Type:Right/Rear It’s namesake is derived from

It’s namesake is derived from the magical fabric used across the jersey front - Polartec Delta

Cold forged and CNC machined from 6061-T6 aluminum alloy

Rounded profile with vertical channels to enhance cornering characteristics

The Cinturato Velo TLR tire utilizes the experience and reliability of SmartNET Silica technology

Thanks to the elasticized bottom hem

R8170 Ultegra Di2 Shifter and Brake Type:Right/Rear It’s namesake is derived fromYour time on the bike is precious, let Shimano make it even better. 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. The BR R8170 hydraulic 2 piston disc brake caliper brings a new level of control to the road cycling world with improved modulation and a quicker initial