Hybrid sport bike type men wheel size 28 inch model 2017 series cannondale quick cx frame material aluminium frame alloy 6061 aluminium frame geometry diamond bike frame sizes cm 48 52 56 60 cm frame sizes m xl colour grey braking system disc brake brakes shimano m396 bicycle fork suspension fork fork suntour ncx suspension fork feature lockout wheel travel 50 mm rear derailleur sram gx number of gears 11 gear system with derailleur