Cube kid 240 sl bikekids are you wondering why dads bike is lighter than yours the kid 240 sl will change that this is a bike designed for enthusiastic riding perfect for junior mountain bikers its an exceptionally high quality childrens bike which manages to be both perfect for off road riding and extremely light all thanks to a new aluminium frame air sprung fork hydraulic disc brakes and 1x11 gear setup framethe heat treated 6061 aluminium frame with mechanically formed tubes