Talk about light dirt bikes, I miss seeing the one off factory mxers before they started the production rule. I remember seeing a picture of Brad Lackey on a KX450 (2 stroke) that weighed 196 lbs. in the late '70s. They were using lots of titainium and magnesium to get those weights. Even though that was over 30 years ago, I remember that a lot of those factory bikes costs over 100 grand. The privateers didn't hardly stand a chance, which I'm sure is why they went to the production rule.