Cube kid 240 disc bikecubes kid 240 disc is in between a kids bike and an adult mountain bike yet feature wise has everything youll find on a full sized bike making it the perfect option for youngsters wanting to keep up with friends and family such features include powerful hydraulic disc brakes a suspension fork 21 gears and a premium aluminium frame with an optimised geometry for younger riders perfect weight for childrenthe 6061 aluminium frame which is heat treated is just as stro