I currently race a 2005 YZ 125, with extremely modified suspension including 1.5 inch lowering front and rear and valving and spring rate for a 115 pound riider, a cut seat and a bunch of other mods that arent pertinant to this post. I weight 115 pounds and am around 5'4. My step father has recently picked up a 2006 YZ 450 for himself so he can practice with me and maybe after a while MAY try a race or to. However he has offered to have the bike setup for me and allow me to race it, this is good as I amke the payments myself on my 125 and couldnt afford to get the YZ 250 I wanted. The thing is the 450 is huge and has tons of power. What are some basics mods that are done to this bike. I have heard about the tires, was thinking Michelin Starcross which I run or maybe Dunlop 756 RRs. And moving the forks around is another mod I have heard was neccesary. Is the turning issue enough to justify a aftermarket triple clamp? I run the Applied top and bottom on my 125 (wish I had of spent the extra 100 to get the RG3). Anything else? He thinks a Rekluse clutch would be good so that in the event of a crash the bike will stay running with no need to restart. I have heard bad things about them and have never seen one actually being used in my area. What is the pros and cons of this setup?