Gruppo Shimano Dura Ace Di2 9270 Disc 12v Variant:Crank arm: 170 and the fabric stays firm

and the fabric stays firm without flapping during use

- Minimization of wheel vibrations

24mm spindle Ruote Rear: Reserve 49

The Fidlock quick buckle allows you to fasten and unfasten the helmet quickly and securely

Gruppo Shimano Dura Ace Di2 9270 Disc 12v Variant:Crank arm: 170 and the fabric stays firmThe Shimano Dura Ace Di2 groupset. The new R9200 12 speed electronic DURA ACE road system is the fastest drivetrain ever made. Speed was the driving factor behind the new generation of road groupsets, and every decision made by the designers was aimed at making you faster. Shimano engineers have refined every component and function to offer you the best riding experience, whether its a sprint to the finish line on the Champs lyses or just a training