SHIMANO 105 rear derailleur FD-R7100 | 12-speed
The wait is over. Shimano's road bike groupset for the ambitious hobby cyclist is finally available with a contemporary 12-speed drivetrain. And at an unspeakably favorable price-performance ratio. Nevertheless, no compromises have been made in terms of durability and functionality and you can see the Japanese company's many years of experience in every detail. Technically, the new 105 groupset is similar to its big sisters Dura-Ace and Ultegra. Many features have been adopted, such as the 12-speed drivetrain, which enables a wider gear range and makes long climbs very comfortable even for less experienced riders. Although the slightly simpler choice of materials marginally increases the weight, you don't have to make any compromises in terms of functionality.
The R7100 rear derailleur was specially developed for the 105 12-speed cassettes with 11-34 or 11-36 teeth. With this drivetrain, you have a very wide range and at the same time a very finely graduated gear ratio on board.
Thanks to the built-in Shadow RD chain stabilizer, the chain stays securely on the chainring even on bumpy roads. As you would expect from Shimano, shifting is quick and precise with little finger force. Even under adverse conditions, the chain shifts reliably from one sprocket to the next. In order to be able to adjust the rear derailleur optimally, it has its own adjustment screw on which the tension of the Bowden cable can be set.
Thanks to the compact Shadow design, the rear derailleur sits closer to the frame. This slim low-profile design not only cuts a fine figure visually, but also protects the rear derailleur from damage or branches reaching into the path in the event of a fall.
Technical data:
Material: aluminum, stainless steel
Design / actuation: 2-speed, downswing / down pull
Mounting: Braze-on mount
Compatibility: ST-R7120 shift/brake lever
max. largest chainring: 50-54 teeth
max. difference at the front: 16 teeth (difference between smallest and largest chainring)
optimum chainline: 44.5 mm
Color: black/silver
Weight according to manufacturer: 249g