Hybrid sport bike type men wheel size 28 inch model 2017 frame material aluminium frame geometry diamond bike frame sizes cm 45 60 55 cm frame sizes l xl s colour black braking system disc brake brakes shimano br m315 bicycle fork suspension fork fork suntour ncx d lo rear derailleur shimano deore xt number of gears 30 gear system with derailleur front derailleur shimano deore crankset shimano fc t521 brake type hydraulic disc brake c