Hybrid sport bike type men wheel size 28 inch model 2016 series bergamont helix frame material aluminium frame alloy 6061 aluminium frame geometry diamond bike frame sizes cm 46 52 56 61 cm frame sizes xl s m colour black braking system disc brake brakes shimano m447 brake disc diameter frontrear 180160 bicycle fork suspension fork fork suntour ncx d rl suspension fork feature lockout wheel travel 63 mm rear derailleur shimano deor