Where the 250 and 450 differ is in handling. The smaller bike is light, and feels that way in the air and in corners. Heavier, faster riders found the fork bottomed more than they liked, and going stiffer on the compression settings made the ride harsh over stutter-bumps without greatly improving bottoming. A small problem, but one aspiring Pros should be aware of. For the rest of us, this is a great 250cc four-stroke MXer that is fast, nimble, effective and, most of all, fun!