Shimano Di2 SW-R671-L Remote TT

Features

• All Di2 components on the bicycle require the same firmware version Using Di2 components with different firmware versions may cause malfunctions
• Use Di2 system checker to update component firmware from http//e-tubeprojectshimanocom/
• SW-R671 2-button TT/Tri shifter set have 600mm length built-in E-tube wires controls front and rear derailleurs
• Not compatible with Dura-Ace 7970 Di2 systems