The flagship and still most revered groupset the world over, DuraAce components stand at the pinnacle of cycling engineering- efficiency, weight, functionality, reliability; you name it and this groupset takes the cake in it. And at this level of electronic 11 speed shifting, it is absolutely what all the pros are riding on, so if you're ready to setep up to full competition level, look no further than these components.
The Shimano DuraAce ST-9070 Shifters embody this elite level of component-ry by being at the very top of the electronic shifting game- programmable, upgrade-able, ergonomic, high functioning and reliable, they are what all racers envision in a racing shifterset. Not to mention they look incredibly well refined to match the highest caliber frames and bars out there that they're likely to go on. If top notch performance in every ride is what you seek, then these shifters are exactly what you're after.