suspension settings and played with the fuel injection again theirs practically no difference between the 09 and 10 crf450r's
186 hp
2007 CR250R and a 2010 CRF450R
i have an 03 crf450r mostly stock and ive hit 91 and might get about 93
101mph
.006 in. Intake .011 in Exhaust
2006 CRF450R=50HP, my 06 dyno'd in at between 39 to 51 within seven tests so I'd say a straight 50 to the back wheel is the correct HP for this machine
Motorcycle oil
Hi , i know from experience that a 04 crf450r tank does not fit a 06 crf450r so id say its a fair guess that the 250s dont fit either
2.7ft lbs or 32.4 inch lbs
you pull the black knob on the side of the motor tho help with cold starts.
Anywhere from 80 to 90 depending on where you r riding and you shouldn't be asking the top speed of a motor cross bike.
I know this doesn't answer the complete question, but its insightful. try this site: http://en.wikipedia.org/wiki/List_of_motocross_World_Championship_results