Well we finally got to put the 150R against my boys CR85 and a freinds boys KX 85 and it litteraly kicked the sh!t out of both of them. I have no doubts what so ever he will be faster on the 150R. I could beat my boy in a drag race with him on the CR I was on the 150R and I have 100lbs on him. The 150R has been rejetted and has a quickshot on it. The other are stock. I know now why the AMA won't alow them. They are frickin fast.