![Shimano Ultegra RD8170 Di2 2x12 Speed Groupset 50/34 172.5mm Crank 11/34 Cassette 160mm Rotors - Bike Bros. Shimano Ultegra RD8170 Di2 2x12 Speed Groupset 50/34 172.5mm Crank 11/34 Cassette 160mm Rotors - Bike Bros.](https://cdn.shoplightspeed.com/shops/623602/files/44954657/1600x2048x2/shimano-ultegra-rd8170-di2-2x12-speed-groupset-50.jpg)
Shimano Ultegra RD8170 Di2 2x12 Speed Groupset 50/34 172.5mm Crank 11/34 Cassette 160mm Rotors - Bike Bros.
That's right, you saw it here first (in Canada). Dura-Ace Di2 12 speed is in the house (store technically). With better braking, better… | Instagram
![Shimano, Ultegra Di2 ST-R8170 / BR-R8170, Road Hydraulic Disc Brake, Front, Flat Mount, Black, IR8170DLF6SC100A, Brakes & Brake Parts - Amazon Canada Shimano, Ultegra Di2 ST-R8170 / BR-R8170, Road Hydraulic Disc Brake, Front, Flat Mount, Black, IR8170DLF6SC100A, Brakes & Brake Parts - Amazon Canada](https://m.media-amazon.com/images/I/51d9prjQrKL._AC_UF894,1000_QL80_.jpg)