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Dura Ace 9100 shimano groupset roadbike 11 speed
9100 Dura Ace 2017
50-34 170mm 11-30teeth
Brand new/Legit shimano items in box
Fb: jasper oliver marquez or bisikleta onesixeight
Shimano Dura-Ace R9100 11 Speed Groupset
The concept behind the new Shimano Dura-Ace R9100 groupset was to examine and improve every component to optimise the input and maximise the output. Or to put it another way, to minimise the energy loss between the effort a rider puts in and the performance he or she achieves.
Each component has been re-engineered to ensure maximum stiffness, performance and minimum weight.