Hybrid sport bike type women wheel size 28 inch model 2017 series scott sub cross frame material aluminium frame alloy 6061 aluminium frame geometry trapeze bike frame sizes cm 42 46 50 54 cm frame sizes m l s xs colour grey braking system disc brake brakes tektro sch f17 brake disc diameter frontrear 160160 bicycle fork suspension fork fork zoom 189 d wheel travel 63 mm rear derailleur shimano altus number of gears 24 gear syst