Hello all, just traded in my old 85' XR600R for a new 08' WR450F. Honda to yamaha but looks like a good trade Did a little research on the forums before I dug into my new bike and got some awesome info on all sorts of stuff. Looks like a great place for Q and A. Look forward to chatting with all in the future. As of now I've done the GYTR kit - AIS removal, throttle stop, air box, grey wire, GYTR performance muffler insert, works F/A mixture screw, and jet kit. A little bit of work to tear into it but well worth the performance gains. My only thought was the jet kit the include in the GYTR kit, the main jet that the include in the kit is a #175 replacing the stock #162s which seams from the other posts a little rich. The guy at the Yamaha shop has had many WR450's and said that the jets they give you in the kit should be good to go. I know this jet issue has been talked about many times but just thought maybe there's been a change from previous years to the 08' ? Seems like a lot of the posts are on 05' - 06' stuff. Oh and I just wanted to post my excitement, this is my first new bike Haven't got a chance to take it to the trails yet but I will tomorrow cant wait Oh and I picked up the 08' for a freakin steal at $6,000.00 OTD can't beat that price, just had to buy it.