Precision actuators move the cage swiftly and smoothly for fast silent accurate front shifts every time.
KEY FEATURES:
- Ergonomic shifting operation without stress
- SHIMANO synchronized shift
- Low profile rear derailleur design
- SHIMANO SHADOW RD
- Race endurance for less damage in crush
- Maintains compact and smooth appearance
The all-new Dura-Ace R9150 group is the result of 40 years of development and innovation tested to the limit at the highest level of competition in road racing time trials and cyclo-cross.
Dura-Ace delivers concentration control and confidence with slick fast accurate performance that you can depend upon without distraction. Dura-Ace now has an 11-speed cassette with numerous gearing options to cover all situations.
Leading edge design materials and construction reduce weight improve stiffness and enhance control.
About Derailleurs Front - Road
Various derailleur systems were designed and built as far back as the late 1800s. A French bicycle tourist writer and cycling promoter Paul De Vivie (1853-1930) invented a two speed rear derailleur in 1905 which he used on forays into the Alps and we wonder if 20 gears are enough. Since then there has been many advancements in the number of gears materials and reductions in weight.
About Derailleurs Rear - Road
Various derailleur systems were designed and built as far back as the late 1800s. A French bicycle tourist writer and cycling promoter Paul De Vivie (1853-1930) invented a two speed rear derailleur in 1905 which he used on forays into the Alps and we wonder if 20 gears are enough..... Since then there have been many advancements in the number of gears materials and reductions in weight.
Buy Online a Shimano Dura-Ace R9150 Di2 Rear Derailleur at TexasCyclesport.com
