12 speed. Bottom bracket, chain, crankset, Hydraulic brake calipers with hoses - front and rear, Di2 7170 Shifting System Includes: 105 Di2 Levers, Di2 Front Derailleur, Di2 Rear Derailleur, Charger, 2 Wires (800mm & 1400mm) and Battery.
Shimano's 105 Di2 R7100 Groupset delivers the workhorse durability for which 105 is known, but with state-of-the-art electronic shifting. Using the latest Shimano technology, this groupset features a 12-speed cassette and a wireless cockpit, providing a wide gear range and a simple setup. Similar to the 12 Speed Dura-Ace Di2 and Ultegra Di2 offerings, shifting is customizable through the use of the accompanying Shimano E-Tube Project mobile app, allowing you to adapt it to your preferences. The braking system ensures superior performance and less noise with an improved bleeding process for overall ease of maintenance.
Detailed 105 R7170 Di2 2x12 Groupset Components:
- 1 x Shimano 105 Crankset (FC-R7100)
- 1 x Bottom bracket SM-BB-RS500 optional
- 1 x Shimano 105 Di2 Rear Derailleur (RD-R7150)
- 1 x Shimano 105 Di2 Front Derailleur (FD-R7150)
- 1 x Pair Shimano 105 Di2 (ST-R7170) Hydraulic Shift/Brake Levers, right & left
- 1 x Shimano EW-EC300 Charging Cable
- 1 x Shimano Di2 Internal Battery (BT-DN300)
- 2 x Shimano Di2 Charging Cables (EW-EC300) 1x800mm, 1x1400mm
- 1 x Shimano DEORE Quick-Link Chain (CN-M6100) Note: (KMC X-12 Chain - Substitution)
- 1 x pair Shimano 105 Hydraulic Disc Brake Calipers with Pre-bled Hoses, (BR-R7170), Front-Flat Mount, 160mm and Rear, 140mm
- 1 x Shimano TL-EW300 Cable Wire Tool
- 1 x Shimano Crank Bolt
Specifications:
Series: Ultegra Di2 R7150/R7170
Application: Road
Gearing: 2-speed, 12-speed (Electronic)
Brakes: Hydraulic Disc
Features:
- Battery mounting internally in the seatpost, running time approx. 1000 km
- STIs for wired electronic shifting
- Front derailleur with more compact design than previous model, connected to battery via cable
- Rear derailleur with wireless chip, LED display, charging socket and function button, connected to battery via cable
The Science of Speed, Shimano’s design philosophy for its latest road groups, is comprised of five elements: a new Di2 platform, a refined interface, the addition of Hyperglide+, a category redefining brake system, and a collection of new wheels. Here’s a quick rundown on how each of them contributes to faster, more efficient road riding.
Shimano's new shifting systems use wireless technology on R7170, R8170 and R9270 versions where it makes sense for both day-to-day life and ultimate performance. Freeing the shift levers from the rear of the bike cleans up the cockpit and simplifies the build process. Meanwhile, connecting the derailleurs to an internal main battery ensures absolute reliability by maintaining stable voltage while also improving Shimano's already lightning-fast shift speed that has made Di2 a staple of the WorldTour pro peloton is not simply an effort to make one-time bike setup easier or to unveil new technology for the sake of creating buzz. Instead, it represents a holistic approach that is 100-percent performance focused.
New Di2 dual control levers feature dramatic, all-new ergonomics and act as the wireless command center on R7170, R8170 and R9270 Type Levers. The DURA-ACE and Ultegra and 105 levers have a longer, slightly curved hood body for a more comfortable and secure grip. Shift buttons are easier to reach and differentiate with extended switches and an increased offset between them. With better access and faster shifting, you’ll always find yourself in the right gear.
