The Shimano Dura-Ace SW-R9160 bar end shifters put Di2 shifting right where your thumbs naturally rest on aero extensions. These plug into the ends of your TT bars and give you gear changes without breaking your aero position or reaching for the base bar. Each shifter has a single button optimized for Synchronized Shift, which means the system handles front derailleur changes automatically as you move through the cassette. One button shifts to easier gears, the other to harder gears, and you decide which is which through E-Tube programming.

The low-profile design keeps the switches tucked close to the bar ends, reducing drag and keeping them out of the way during transitions. The thumb-activated buttons are easy to find by feel when you're focused on the road ahead, and the positive click confirms each shift. Multi-Shift is built in as well—hold the button down and the rear derailleur keeps moving through cogs until you release. This is useful for quick cadence adjustments when the grade changes or when you need to spin up after a corner.

These shifters work with both 11-speed and 12-speed Di2 drivetrains. If you're running the newer R9200 or R8100 systems, a firmware update to version 3.3.0 or later enables full compatibility. They pair naturally with the ST-R9160 base bar shift/brake levers, giving you complete drivetrain control from multiple positions. The E-Tube wiring system connects everything through a junction box, and since each shifter just needs a single wire connection, installation stays clean and straightforward. Di2 wires are ordered separately to match your specific frame routing needs.... Read More