SHIMANO 105 Di2 R7170 2x12 Complete Groupset

Shimano 105 Di2 R7100, 12-Speed Semi Wireless Electronic Groupset

The new Shimano 105 Di2 brings electronic shifting to a wider range of riders, delivering the same DNA and innovation found in Dura Ace and Ultegra, now at a more accessible level. For anyone coming from a mechanical setup, this groupset is a complete transformation in shifting speed, precision, and riding experience.

Hybrid Semi Wireless Architecture

The Shimano 105 Di2 system operates with a semi wireless configuration,
- Wireless shifters for a clean cockpit and effortless setup
- Wired derailleurs and integrated battery for maximum reliability and long runtime

This hybrid concept ensures ultra fast, interference free shifting with outstanding battery life, up to 1,000 km per charge. No junction box is required, setup and charging are done directly via the rear derailleur.

Key Features & Improvements

12 Speed Drivetrain

A completely updated 2x12 transmission offers smoother cadence control and optimal gear spacing, improving pedaling efficiency across any terrain.

Refined Ergonomics

- Redesigned shifters with improved grip and control
- Better reach and lever travel adjustment, ideal also for smaller hands
- 1.5 mm raised Di2 buttons for perfect tactile feedback even with gloves

Disc Braking Improvements

- New R7170 2 piece CNC aluminum calipers
- 10% increase in pad to rotor clearance, reduced chance of disc rub
- More power, smoother modulation, and easier maintenance
- Improved bleed process without removing the caliper

Hyperspeed Shifting

Shifting speed has been increased by 58% front, 45% rear compared to previous Di2 models, fully optimized to shift smoothly under load during sprints or climbs.

Fully Customizable via Shimano Di2 App

Personalize everything, button mapping, shift speed, synchro or semi synchro shifting. The system adapts to your riding style.

Included in This Groupset

- ST R7170 Di2 Hydraulic Dual Control Levers (2x12)
- BR R7170 Hydraulic Disc Brake Calipers (x2)
- FC R7100 Hollowtech II Crankset (2x12 -165mm 52/36) 
- FD R7150 Di2 Front Derailleur
- RD R7150 Di2 Rear Derailleur
- CS R7100 12 or HG710 12 Speed Cassette (11/34)
- CN M6100 12 Speed Chain
- EW SD300 Electric Cables
- BT DN300 Internal Battery
- EW EC300 Charging Connector

OEM Version - What Does It Mean?

This is an OEM (Original Equipment Manufacturer) version, supplied exactly as it would be to a bike manufacturer.
That means,
• Original Shimano produced, not aftermarket
• Delivered without retail packaging
• Ideal for professional builds and clean installations

* Disc rotors and bottom bracket not included, OEM specification.