Video: How fast do the new Shimano 12-speed road groups really shift?

With shops just starting to get the new Shimano 12-speed road groups, and our own Ultegra R8100 just arrived, we wanted to see just how fast it shifts. The TL;DR version is, it’s fast. Like, really fast, both in the lab and on the road. In the video below, you’ll see us run it through

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