Boys bike kids mountain bike series ghost powerkid wheel size 16 inch frame material aluminium gear system without gears number of gears 1 rear derailleur singlespeed fork rigid hi ten braking systems rim brakes coaster brake weight 96 kg bike frame size cm 234 cm crankset lasco brakes tektro rims ghost tyres kenda saddle velo frame geometry diamond main colour white secondary colours blue pink brake type v brakes