Shimano Di2 SW-R600 Remote Climbing Shifter
Shimano -
Shimano SW-R600 Di2 Remote Climbing Shifters Unit is designed to be mounted on the right-side top section of a drop bar, adjacent to the stem Proper placement allows the rider to shift the rear derailleur up or down with the right thumb while in a climbing position 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-tubeproject.shimano.com/ SW-R600 Remote climbing shifter has a 265mm length built-in E-tube wire Compatible with Dura-Ace 9070 and Ultegra 6870/6770 Di2 systems; not compatible with Dura-Ace 7970 Di2