I recently inquired about a mystery frame I have and I think I have determined that it is a MKM. However, I'm still not sure and I can't find much info on this company. The serial # on my bike is 74018 and is stamped on the bottom of the bb left to right reading drive side to non ds. If anyone can comment on this info or supply anything on MKM or it's members I would be grateful. Ken Willow Chicago,IL P.S. I have photo's of the frame if that would help.