- Dec 25, 2003
Back in the mid eighties I fitted a KDX 200 engine to a kx125 rolling chasis. I would like to do this again as it works out to be a cheap competive bike. What I would like to know what engines fit what frames? I know you can fit any engine to a frame if you want. What I really want ti know is the width of the swing arm pivot on the KX's and which ones fit the KDX engines. I would prefer to use a 99 on KX chasis and a later model KDX engine.