I started out with a Honda 400EX bored out to a 440, and she was great until I needed more power. I didn’t like the feel of the new YFZ450 and 450R, and I felt very comfortable on my 400EX. It just so happened that my buddy purchased a new YZ450F motorcycle, and after only one week of owning it (not bike related). He was forced to sell it, but wasn’t getting price he wanted for it. He decided to part it out, and I asked myself if I could put the YZ450F motor in my EX. Sure I can, so we stripped my bike down, and JB Racing supplied the gussets and all the necessary mounts to get the engine mounted into the frame. Then we got rid of the +2 A-arms for a set of Long Travel A-Arms with a better set of shocks, and we started to dress her up by powdercoating, polishing, and chroming almost everything. Once I was finished and had everything dialed in, the conversion was everything that I wanted. It is an all around wickedly fast quad that is different than what everyone else has at the track, so this is how my baby was born.