SHIMANO Ultegra Di2 R8170 2x12 Complete Groupset

Shimano Ultegra Di2 R8170, 2x12 Speed Electronic Groupset

Shimano Ultegra R8170 represents the Science of Speed, engineered to deliver a faster, more precise, and more intuitive ride. Every detail has been optimized to elevate the road cycling experience, reconnecting riders with the essence of performance, rhythm, and freedom.

Hybrid Semi Wireless Di2 Platform

- Wireless shifters for a clean cockpit
- Wired derailleurs and central battery for maximum reliability
- Shimano’s fastest electronic shifting ever, even under full load
- Rear derailleur integrates charging port and D-FLY wireless connectivity

Key Features & Technology

12 Speed Drivetrain

Optimized gearing with Shimano HYPERGLIDE+ technology, ensuring ultra smooth shifting both up and down the cassette, even during maximum effort.

Refined Ergonomics

A perfect balance of comfort, aerodynamics, and aesthetics
- Secure grip and improved lever design
- Clean cockpit with minimal visible wiring
- Fully customizable functions via Shimano E-Tube app

Enhanced Hydraulic Braking

- Updated Ultegra calipers with increased pad to rotor clearance
- Quieter operation with improved heat management
- Easier bleeding and maintenance process

Included in This Groupset

- Ultegra Di2 ST R8170 Wireless Hydraulic Shifters (left and right)
- Ultegra BR R8170 Hydraulic Disc Brake Calipers (front and rear, Flat Mount)
- Ultegra FC R8100 Crankset (2x12 - 165mm 52/36)
- Ultegra Di2 FD R8150 Front Derailleur
- Ultegra Di2 RD R8150 Rear Derailleur (12 speed)
- Ultegra CS R8100 12 Speed Cassette (11/34)
- Shimano CN M8100 12 Speed Chain
- BT DN300 Internal Di2 Battery
- EW EC300 Charging Cable

OEM Version - What This Means
- Original Shimano production, not aftermarket
- Supplied without retail box or accessories
- Ideal for clean, professional level builds

Bottom bracket not included, OEM specification.