kx500 2004 vs kxf450 2014

[motopunk]

just found this ... 
the old battle between 2stroke and 4stroke ... but both of destrys bikes ar not stock.
http://www.dirtrider.com/features/video-kawasaki-kx500-2-stroke-vs-kx450f-4-stroke/

i mean the k5 in a modern chassis would beat any 450 on the track..

[mxaniac]

i mean the k5 in a modern chassis would beat any 450 on the track..

Not necessarily, I've had 2 very fast pros you've seen in the main event if you watch SX ride my bike and while one of them loved it the other couldn't stand it.  It takes a tremendous amount of throttle control to keep the bike hooked up and doesn't suit everyone.  It's my opinion that 2-stroke technology is superior over 4-strokes for this application but the 500 engine we're talking about is 30 years old.  A modern incarnation even in a smaller displacement would be a great bike and I would buy 1 in a heart beat but the latest 450f does a wonderful job of getting the power to the ground and has decades of development on its side.  That said now that I don't ride competitively my steed of choice for maximum fun factor is a 500AF, nothing puts a grin on your face like open class 2-strokes.

[motopunk]

thats what i thought ...

i have 2 kx500 ..
 one in a 93 kx250-frame - great handling..
the other is 88 engine in a 87-frame for classic race.. handles also not bad. the tank-seat-bodywork is smaller than the big tank and seat that came in 88- 2004 (feels little bit like riding a cow, but the best open-class-engine that was ever build  ) 

a modern frame is the way to go for compeating in the open-class.
but at least it is always the rider that makes a good bike realy fast on track. and it is not important to take an af-frame or put in a ktm-steel-frame.
 the point are the better ergonomics , forks and shocks, that will bring any 500 to an higher level of riding...