Hybrid sport bike type men wheel size 28 inch model 2017 series cube cross frame material aluminium frame characteristics double butted frame geometry diamond bike frame sizes cm 46 50 54 58 62 cm frame sizes xl s l m colours black green braking system disc brake brakes shimano m355 brake disc diameter frontrear 160160 bicycle fork suspension fork fork suntour ncx d rl rear derailleur shimano deore xt number of gears 30 gear syst