Shimano brings its legendary Di2 electronic shifting technology within reach with the 105 R7170 12spd Di2 Road Groupset, a complete drivetrain and braking package built for riders who refuse to compromise on performance.At the heart of the groupset sit the ST-R7170 shift levers, which send instant electronic signals to the FC-R7100 front derailleur and RD-R7150 rear derailleur for precise, effortless gear changes every single time. Paired with the FC-R7100 crank and the CS-R7101 12-speed cassette, the drivetrain delivers a wide, smooth gear range that keeps riders turning efficient cadences across any gradient.Stopping power comes courtesy of the BR-R7170 hydraulic disc brake calipers, working in tandem with the SM-RT70 rotors for consistent, controlled braking in all conditions. Whether roads are dry, wet, or somewhere in between, riders can trust the system to respond predictably and with confidence.Rounding out the package, the CN-M6100 chain ties the entire drivetrain together, offering durable, low-friction performance that holds up under sustained road use.The Shimano 105 R7170 12spd Di2 Road Groupset brings professional-level electronic shifting and hydraulic braking into one cohesive, reliable package. For riders ready to step into the world of Di2, few choices make more sense.Features- 2x Shimano BR-R7170 Calipers- 2x Shimano SM-RT70 Rotors- Shimano 105 Right and Left ST-R7170 Levers- Shimano 105 FC-R7100 Crank- Shimano 105 FR-R7150 Front Derailleur- Shimano 105 RD-R7150 Rear Derailleur - Shimano 105 CS-R7101 Cassette - Shimano CN-M6100 Chain- Shimano EW-EC300 Di2 Charger Cable- Shimano BT-DN300 Di2 Battery- Shimano SD-300 Di2 Cabling - Shimano SM-BB9000

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