TT / Bar-end satellite shifting switches

Compatibility warning: none of the 7970 series components will work with other generation Di2 components. The plug is different and simply won't fit.
These DURA-ACE 7970 Time Trial Bar-end shifters come with electric wires attached. You plug them into the ST-7970 shift levers.
Alternatives
If you're looking for an aerobar alternative that will work with current generation Di2, have a look at either the two-button SW-R671 or the DURA-ACE SW-R9160 shifting switches.
Details & Specifications
Shimano model number: | SW-7971 |
Weight: | 50 g |
E-Tube ports: | 0 |
E-Tube Port type: | SD50 |
Type: | Shifting Switch |
Component series: | DURA-ACE 7970 (Road) |
Downloads: | DURA-ACE 7970 service instructions |