Bike touring bike type women wheel size 28 inch series rose black lava frame material aluminium frame alloy 6066 aluminium frame characteristics triple butted frame geometry trapeze bike frame sizes inch 17 19 21 23 inch colours black grey braking system disc brake brakes shimano m446 brake disc diameter frontrear 160160 rear derailleur shimano nexus number of gears 8 gear system with internal gear hub crankset gates carbon drive cdm