50/50 works re-creation? I noticed this thread the other day. http://www.thumpertalk.com/topic/1059806-happy-birthday-thumpertalk/ It seems these YZM400F bikes may be the very reason ThumperTalk came to be. That is something. Never would have figured. Glad they saved those videos. I have one on Bartolini on my website. Very impressive also. If you start searching the history of the YZM400, you will see that its impact to motocross and motorcycle market is astronomical. It literally changed history and direction of motorcycles. We can save the two stroke, four stroke debate for another thread but this bike did serious damage to two stroke but I think it was inevabtable.