Shimano SW-R671 Di2 TT Shifter Set

This product is a must-have on any clip-on aero bars! Riding with it is so different when you can switch gears easily without changing positions. Setup was relatively easy and quick on a DI2 (Ultegra), which took about 45 minutes, including removing the bar tape and putting it back. You can unscrew the cap and move the wire to go out from within the mounting screw and then internally through the tube. The cable is long enough to get to the DI2 shifters' junctions on the handlebars, and the mounting screw is durable and sits firmly on the aero bars. My only complaint would be the price.

This revolutionizes time trialing. Easy to connect -- don't buy the larger junction box until you've confirmed your plugs under the brake hoods are already used. In my case I just plugged into the unused ports, retaped the bars, and everything worked. I then raced with them 440 miles down the Natchez Trace Parkway and even with a foggy brain shifting was simple and convenient. Bravo.

nice

Excellent construction and easy plug and play connection with e-tube design. Immediately recognized and capable of being programed with e0tube project software. My only gripe is with the design itself. It seems like it'd be more ergonomic if one button was located on top of the shifter and the second button was on the side- or even the bottom. Other than that, it works great and I'm happy with my purchase.

1 touch is all takes. I had these put on a Catrike recumbent, talk about ease of use and smoothness between shifts.

These shifters are awesome! Well worth the price. Shifting is smooth like butter and they look sweet on my all rounder Giant Propel

Highly recommended if you have tri bars. You are not getting the full benefit of DI2 without these. I have clip on aero bars and it's easy to disconnect if you want to pull them off. Being able to shift in aero as well as on the hoods is fantastic.

For TT aerobars very nice. Quick and simply instal