The Shimano SW-RS801 "sprinter shifter" is classically used on 11-speed Di2 shifting road bikes to allow easy shifts in the lowest, bar-drop position, but the shifters can also be installed on triathlon aerobars and basebars.
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Product description
The Shimano SW-RS801 "sprinter shifter" is classically used on 11-speed Di2 shifting road bikes to allow easy shifts in the lowest, bar-drop position, but the shifters can also be installed on triathlon aerobars and basebars.