Ok, can somebody give me an idea how much power & speed does a 450R have over a 400EX. Trying to compare to the 400EX i had which was bored .040 over with a hotcam, rev-limiter, K&N air box, pipe & exhaust.

I have never rode a 450R or 450YFZ, but i was told there is not comparison. Now, how about the 450R vs the YFZ? I hear the YFZ is faster than the R unless you put the HRC kit on the 450R.

Thanks for any input.
Aarron