alright guys- havin a really hard desicion here. i do both, track and trail. proboly 60% track and 40% trail but i a m having a hard desicion. the e start sounds sweet, but the extra weight doesnt. im 14 5,6 and weigh 180, so im not a light rider but i ride faster trails so stalling is not to much of a problem. thanks
From what you've said here, without a doubt get the YZ. If you ride the track 60% of the time, you'll hate the WR because of it's softer suspension. As long as you keep the up with valve adjustments, starting won't be a problem. I don't know what all the fuss is. Once the bike is warm, pull the hot start lever and it will fire up first kick every time. I think e-start is more rewarding for those with aging bodies. You're young, you don't need it.
I have an 06 YZ, and yeah the low end power is weak, but stalling is never an issue because I'm pinning it most of the time. I don't understand why anyone would want a flywheel weight for a small bore motor anyway. You need all the hit you can get, so why subdue it?
Remember, it's much easier to make set up a YZ for off-road than it is to set up a WR for the track. To set up the WR for the track (or just to make it run properly), you need to do all the annoying de-restricting of intake and exhaust, re-jet, cut wires, etc. and have your suspension re-worked completely just to make it bearable. If you really want to be competive, you'll want to change the cam timing and remove the e-start, battery and lighting to make it lighter, but then you're still stuck with a wide ratio tranny with too many gaps. I tried to set up my WR 450 for the track and eventually gave up. I'd only recommend the WR for casual trail riders, or riders from California who want the green sticker and are willing to live with the WR's limitations for the priviledge of riding outdoors year-round.
Making the YZ more off-road worthy is simple, just change your sprockets, throw on a bigger tank (that's not even necessary, however, the 250 sips gas) play with the clickers, and bolt on some handuards.
GET THE YZ