Ok, so I bought an 05 predator about a month ago. I got it from a guy off craigslist that didnt know much about the bike, the only modification it has (that I know of) is an HMF slip on exhaust. Its runs really strong and its a blast to ride, my cousin just recently purchased an 04 raptor that was advertised as having a 686 bbk and full GYTR exhaust. I rode it as well and it has good power also, but I can pull away from him on the flat track that we race at. Hes a pretty big guy so figuring it must be rider weight I had my older brother try racing me on the raptor, it was a lot closer but I could still edge out on him by a bike length and stay there. Im not sure how stock predators run so I was really suprised at the outcome. Could it be possible that I might have a built bike myself?