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gearEleven International: Shimano ST-7970 Dura-Ace Di2 Dual Control Levers Compatibility and Specifications
![Shimano Dura Ace Di2 RD 7970 Rear Derailleur user reviews : 0 out of 5 - 0 reviews - roadbikereview.com Shimano Dura Ace Di2 RD 7970 Rear Derailleur user reviews : 0 out of 5 - 0 reviews - roadbikereview.com](https://content.roadbikereview.com/channels/roadbikereview/images/products/large/product_447133_61873.jpg)
Shimano Dura Ace Di2 RD 7970 Rear Derailleur user reviews : 0 out of 5 - 0 reviews - roadbikereview.com
![Amazon.com : SHIMANO Dura-Ace Di2 Shift/Brake Lever for Road : Bike Shift Levers : Sports & Outdoors Amazon.com : SHIMANO Dura-Ace Di2 Shift/Brake Lever for Road : Bike Shift Levers : Sports & Outdoors](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/61-hfZqLVkL._AC_UF1000,1000_QL80_.jpg)
Amazon.com : SHIMANO Dura-Ace Di2 Shift/Brake Lever for Road : Bike Shift Levers : Sports & Outdoors
![I have a dura ace 7970 Di2 electronic derailleur… but only this part. What else would I need to utilize this on a bike and is there any way I can tell I have a dura ace 7970 Di2 electronic derailleur… but only this part. What else would I need to utilize this on a bike and is there any way I can tell](https://preview.redd.it/pla7j2ejapn91.jpg?width=640&crop=smart&auto=webp&s=9d1432a963548ee767aaf6e0bf1ae06bce4aea3d)