Shimano Dura-Ace Di2 ST-7971 10 Speed Bar-End Shift/Brake Levers

Shimano Dura-Ace Di2 ST-7971 10 Speed Dual Control Electronic Bar-End Shift/Brake Levers
When every second counts, you want Shimano's Dura-Ace Di2 Dual Control Electronic Bar-End Shift/Brake Levers at your disposal. These amazing time trial/triathlon-specific levers are for use with Shimano's Di2 drivetrain components (sold separately). With a simple, light touch of the easily accessed buttons, you get instant gear changes and squeezing the levers applies the brakes with authority. And, these carbon beauties feature spot-on ergonomics for smooth, controlled shifting and braking even when you're pushing yourself to your physical limit.