250-500cc 300 kits

Has anyone put the factory husky 300 kit on a 00-04 model wr250? I'd think it to fit the same as on the newer models that this kit is made for, a 300 on the 00-04 model would be great ecspecially with the wide ratio tranny the dang 5th gear in that bike would be crazy fast.

I have not tried one, but I would imagine a good port job would be good to get the most out of it. Eric Gorr sells a 265cc kit that can be ported to any style of power delivery you want. I have heard great things about it.

I have a Gorr 265 kit, and while it runs great, the bore causes the cyl. wall to be too thin. The first time I pulled it apart, I found a hole in the cyl wall leading to the powervalve chamber. Being that I already had a new piston in hand, and it still ran fine, I reassembled it. I do consider the cyl. to be wasted now and next time I pull it apart I'll be installing a 300 kit.

Would love to see a pic of that!

I suppose I should have taken one at the time, but seeing that this bike has moved pretty far down my priority list, it's not likely I'll have that cyl. back off anytime soon. But if I do.........

And in response to the original poster.........yea it is awesome with the six speed tranny. I would say the tranny is a much greater upgrade than a 300 kit. First gear is much more usable in the tight stuff, and sixth gear will take you up to about 82 comfortably, as opposed to 65mph that the 5 speed allows, without the gappy spacing of the real WR tranny's from '00-'02 or so.