Shimano SW-R9160 Dura-Ace Di2 TT Bar End Shifter Set Parts-Cockpit & Saddle-Saddles Easily mounts to your bike's

Easily mounts to your bike's front or rear hub

And the setup is simple

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Shimano SW-R9160 Dura-Ace Di2 TT Bar End Shifter Set Parts-Cockpit & Saddle-Saddles Easily mounts to your bike'sA single programmable shifter button in each unit, designed to fit cleanly into aerobar extensions. Works perfectly with Shimano's Di2 Synchro Shifting: each "up" shift moves to the next gear ratio considering both front and rear derailleurs, each "down" shift does the reverse. Requires Shimano 9100 Di2 drivetrain. Can be installed as sole shifting point or used in conjunction with STI or brake lever Di2 controls. Shimano's Di2 technology provides