Shimano 105 Di2 R7100 12-Speed Disc Brake Groupset – Electronic Road Bike Upgrade
Discover Pro-Level Electronic Shifting with the All-New Shimano 105 Di2 Groupset
Step into the world of electronic shifting with the Shimano 105 Di2 R7100 Disc Groupset, engineered for road cyclists who demand precision, performance, and reliability without the premium price tag of Dura-Ace or Ultegra. Bringing cutting-edge Di2 technology to a broader audience, Shimano 105 Di2 offers the same smooth, lightning-fast electronic shifting found in professional race components.
Whether you're upgrading from mechanical shifting or building your dream road bike, the R7100 groupset delivers seamless gear changes, powerful hydraulic disc braking, and a refined ergonomic design to elevate every ride.
- 12-Speed Drivetrain – Optimised gear range for performance and versatility
- Wireless Di2 Shifting – Clean cockpit and hassle-free electronic performance
- Reliable Hydraulic Disc Brakes – Confident stopping power in all conditions
- Lightweight & Durable Components – Designed for road endurance and speed
- Inspired by Dura-Ace – Pro-level tech, accessible price
The Shimano 105 Di2 Groupset is perfect for road cyclists upgrading from mechanical groupsets, riders looking for high-performance Di2 without Dura-Ace pricing, endurance, training, and racing setups, as well as custom bike builds or component replacements.
Shimano 105 Di2 Disc 12 Speed Groupset Includes:
- ST-R7170 Di2 Brake/Shifter with Brake Hoses
- FD-R7150 Di2 Front Derailleur
- RD-R7150 Di2 Rear Derailleur
- BR-R7170 Disc Brake Calipers flat mount front and rear
- FC-R7100 Chainset
- CS-R7100 Cassette 12 Speed
- CN-M6100 12 Speed Chain
- BT-DN300 Internal Battery
- 2 x SD300 E-Tube Wires, 1 x 800mm, 1 x 1400mm
- EW-EC300 Battery Charger Cable
ST-R7170 Di2 Brake/Shifter with Brake Hoses
The new SHIMANO 105 shift/brake lever features Di2 electronic shifting for the first time, bringing precise, intuitive gear changes to even more riders. Reach adjustment and customised button functions allow you to dial in your ideal ergonomics.
- Clean cockpit: Wireless connection enhances the aesthetic of your bike while keeping shifting lightning fast
- Longer lasting. Uses two CR1632 batteries (battery life: 3.5 to 4 years)(Initial shifter batteries may have a shorter battery life than stated above.)
- Compact, ergonomic performance cascaded from DURA-ACE
- Raised hood peak improves ergonomics, while a longer hood body increases hand support
- Make DURA-ACE yours with custom button function and adjustable ergonomics
- Easily change button function with the E-TUBE app
- Find your optimum lever position with simple reach adjust
FD-R7150 Di2 Front Derailleur
SHIMANO Di2 electronic shifting lets you change from the big to small chainrings, or vice versa, whenever you like while minimising the risk of a dropped chain. Similarly, you can perform rear shifts without the need to trim the front derailleur to avoid chain rub. Full- and semi-synchronised shifting functions can be selected using the E-TUBE app. With digitally accurate electronic shifts and coordinated communication between shifters and derailleurs, the new SHIMANO 105 front derailleur offers the best shifting you've ever experienced.
- Powerful, accurate, smooth front shifting
- Programmed chain guide control by automatic trim
- SHIMANO SYNCHRONIZED SHIFT
- Manual, full- and semi-synchronised shifting programme
- Top gear teeth capacity: 50-52T
RD-R7150 Di2 Rear Derailleur
Wide 36T-compatible 12-speed Di2 rear derailleur. Receiving the wireless shifting signal from the shift lever, the SHIMANO 105 rear derailleur completes a shift in the blink of an eye with its high-performance motor and optimised link structure. This is the hub of the Di2 system, with the charging port, indicator LEDs, adjustment switches and more integrated into a compact package. A low-profile design reduces damage from contact and falls.
- Compact design includes an integrated wireless unit, charger, switch
- LED status indicator
- Battery indicator
- Pairing
- Adjust mode, etc.
- Wider range capacity
- Max. low sprocket: 36T
BR-R7170 Disc Brake Calipers flat mount front and rear
With proven hydraulic braking technology, the new SHIMANO 105 calipers feature the SHIMANO Flat Mount System and its low-profile design that is ideal for road bikes. More compact and lighter than ever, the R7170 brakes offer wide pad clearance for easy wheel removal and quiet performance as well as one-way bleeding for easy, clean maintenance.
- 10% wider pad clearance decreases the chance of disc brake rotor rub
- Maintenance-friendly bleeding process
FC-R7100 Chainset
The newly designed crank arms offer an optimised balance between lightweight and efficiency. The crank, formed with hollow aluminium technology, is anodized with a beautiful gloss black anodized finish, giving it a luxurious look. The resin ribs on the back of the chainrings are SHIMANO 105's unique structural design that achieves both thorough weight reduction and crisp shifting performance.
- Optimal balance of stiffness, strength, weight and rotational performance
- HOLLOWTECH II structure cuts weight yet maintains strength for better power transfer
- Crank arm length: 160, 165, 170, 172.5, 175 mm
- Gear combination: 50-34T, 52-36T
- Q-factor: 148 mm
CS-R7100 Cassette 12 Speed
From sprinting on the flats to climbing steep inclines, the 11-34T cassette has you covered. It is compatible with both SHIMANO 11-speed and 12-speed FREEHUB bodies.
- Refined 12-step gear combination provides peak efficiency and accelerating performance for every situation
- Compatible with new 12-speed and road 11-speed FREEHUB body
CN-M6100 12 Speed Chain
The M6100 chain provides smooth shifting and enhanced chain retention thanks to an extended portion of the inner plate. The new chain features QUICK-LINK assembly and is optimised for HYPERGLIDE+ cassettes and DYNAMIC CHAIN ENGAGEMENT+ chainrings.
- Proprietary design ensures smooth shifting and strength
- Extended inner plate improves chain engagement and retention
- Shorter shift times and less pedaling shock
- Optimised to work with HYPERGLIDE+ cassette sprockets and DYNAMIC CHAIN ENGAGEMENT+ chainrings
BT-DN300 Internal Battery
With the same size as its predecessor, the slim DN300 battery can be housed inside seat posts or frames ensuring a clean aesthetic. Now with 3 ports, the DN300 simplifies wiring to front and rear derailleurs, supplying stable power at all times. The third port is for riders who seek the redundancy of Shimano's 12-speed Di2 wired option.
- Compatible with thinner next generation electric wire SD300 and systems after R9250/R8150 series
- 3 SD300 ports
- Shared fixing method with BT-DN110
2 x SD300 E-Tube Wires, 1 x 800mm, 1 x 1400mm
- More compact design makes new electric components smaller and lighter
- Will potentially expand the future capabilities of DI2 systems
- For internal routing usage (wire holder included)
EW-EC300 Battery Charger Cable
Charging of the new Shimano 12-speed Di2 road drivetrains is now accomplished with the EC300 charger cord. Attached to the rear derailleur, this new cord is less expensive than previous chargers and can also be used to charge Shimano power meters.
- Charging connector for RD-R9250 and FC-R9200-P
- Compatible with charging FC-R9200-P
- 1.5 m cable length
Upgrade your bike with the Shimano 105 Di2 R7100 Disc Groupset and enjoy the next generation of smart, smooth, and reliable cycling performance – backed by Shimano’s world-renowned engineering.