Just wanted to introduce myself and say thank you for all the great posts. I figured I'd better finally register since I'm now officially the proud new owner of a used 2007 yz450f. Yay!! Pics to follow as soon as I figure out how to do it. Mods I'm considering. New Light system to make it street legal so I can ride the TAT trail for a weekend adventure on some country back roads. Y'all are great. Hat-tip to Grayracer. Your knowledge of bikes is truly impressive!!