Big performance in a tiny package, the Di2 SW-RS801-S for on road bar brings lightning fast shifting to the tops of any SHIMANO 12-speed road bike.
THE SCIENCE OF SPEED: Shimano Dura Ace Di2 SW-RS801-S Shifting Switch
Shimano has been working for years to provide you with an advantage of seconds. The new 12-speed DURA-ACE R9200 is the fastest groupset ever and the pinnacle of SHIMANO technology and innovation. Speed was the key driver for the development of this new generation road groupset. That’s why every component has been revised, refined and optimised to make you even faster – whether to leave the peloton behind you or to win the final sprint on the Champs-Élysées.
Winning or losing by millimeters can be the difference between a seamless shift and the split second it takes to reach for a gear. With satellite shifters, in the drops or on the tops, additional custom shift locations help you perfectly manage your effort.
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