Shimano unveils 105 Di2 groupset, featuring 12-speed wireless shifting 

Shimano has officially unveiled the new 105 Di2 groupset, which comes with 12-speed wireless shifting technology. 

Previously only available in the Ultegra and Dura-Ace groupsets, Shimano has released its electronic shifting in the more entry-level componentry, to mark the 40th anniversary of the 105 groupset. 

The full cost of the groupset is set at £1,730 RRP.

Di2 was first launched in 2009, but now features some key upgrades for 2022, including a wireless cockpit and the move from 11 to 12-speed. 

According to reports, Shimano also plans to keep its older 11-speed mechanical 105 groupset in production.

The Shimano 105 Di2 set will feature a hybrid system, with a wireless cockpit paired with a wired connection between the seat-tube battery and the front and rear derailleurs.

Japanese component giant Shimano has also updated the hood and levers to be more ergonomic, and offer a smoother lever action. 

Cassette options will include 11-34 and 11-36 gearing, along with 50-34 and 52-36 cranksets. 

The new system will be backwards compatible, which means 11-speed freehubs will be compatible with the new Shimano 105 Di2 drivetrain.   

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Shimano has also unveiled new RS710 Carbon Wheels, in the C32 climbing set and the C46 all-round wheels, described as Shimano’s “two most affordable carbon road wheelsets ever.” 

The C32 features a 32mm rim height, 21mm internal rim width and target weight of 1,504g. The C46 is 46mm tall, has a 21mm internal rim width and target weight of 1,612g. Both non-series wheels are 11- and 12-speed compatible, and tubeless ready. 

Shimano 105 Di2 groupset specs

T-R7170 Shifter

• Wireless Di2 connectivity

• 2×12-speed Dual-Control lever

• Refined hood for improved ergonomics and aerodynamics
• Improved button access

FC-R7100 Crank

• HOLLOWTECH II Crank Set

• 2×12-speed

• Chainring combinations: 50-34T and 52-36T (available at later date).

CS-R7100 Cassette

• 12-speed

• 11-tooth small cog for optimal efficiency

• Optimized “Sweet Spot” Gears for pedaling efficiency

• Compatible with 11-speed freehub bodies

• 11-34T

CS-HG710-12 Cassette

• 12-speed

• 11-tooth small cog for optimal efficiency

• Compatible with 11-speed freehub bodies

• 11-36T (available at later date)

RD-R7150 Rear Derailleur

• SHIMANO SHADOW Rear Derailleur

• Integrated D-FLY connectivity

• 12-speed Di2 technology

• Compatible with 11-34 and 11-36T cassettes

FD-R7150 Front Derailleur

• 12-speed Di2 technology
• Fast, precise front shifting

BR-R7170 Brakes

• More fine-tuned control and heightened braking performance

• 10% wider pad clearance
• Easier bleeding process

WH-RS710-C32-TL wheelset 

• Lightweight wheels for riding where acceleration is key

• 665g front wheel, 839g rear wheel

• 21mm internal, tubeless rim

 

WH-RS710-C46­-TL wheelset 

• All-around wheels for breakaways and more

• 719g front wheel, 893g rear wheel

• 21mm internal, tubeless rim