Enhanced SEO: Shimano SW-R610 Dura Ace Di2 Sprint Shifters Review

Not for ST-6770 switch as the seller says. Only works with ST-6870 or ST-9070 rear derailleurs according to the Shimano e-Tube Compatibility Guide.

This is the best addition to any bike with Shimano electronic shifters! Easily swapping drops allows you to stay on drops longer. The do-it-yourself installation was also very easy, a little tricky to make a clean hole in the bar tape but doable. 45 minutes work. Should be the standard for sports bikes!

Such a cool product. It made shifting smooth, incredibly comfortable and surprisingly valuable, especially when sprinting. It's so great to have your hand in the optimal running position and just boom, click, click, click as you move the cassette down. Sometimes I catch myself riding in the drops so I can use them to shift!

Extremely useful if you're doing drops, not just sprints. Cutting the bar tape for the shifters was a bit of a chore and the result isn't as clean as I'd like, but the functionality is great. Keep in mind that you will need the latest generation Ultregra or DA Di2 Brifter to use this. I don't think the latest generation brifters have the right connector (at least not Ultegra, maybe DA).