I just don't want to have to go through all the mods on two bikes. The DRZ i can just throw a pumper carb on and be done with it.

If i could find another KLX for what i paid for my first one though i would seriously consider it.

 

Well I'm glad to be part of this site and really enjoy the fact I can share my passion for riding with others like myself. I will get the newest model of klx and will update everyone on my upgrades and perfomance mods. Gonna be a fun journey I'm sure. Hope to post some pics soon too! Any other ideas feel free to let me know! Thanks everyone.

 

You may want to take a serious look at a Suzuki DR400Z. I love my KLX!
But if you want anything near the CR250, get a 400.
IMOP the big bore kits can never be as reliable as a untouched engine.

 

I'm not so sure about the reliability statement. The KLX was designed as a 300, so a 50cc increase isn't a big stretch.

 

ya man your gonna be disapointed with the klx comin off a cr250. i would look more into a drz400 myself. those things weigh alot though.

 

As one who grew up riding two strokes the little KLX was a huge disappointment for me. I had ridden some newer MX four strokes and even they felt anemic to me. However, being in Japan, having the e-start, being able to do the dual sport riding and not needing to trailer to go riding I bit the bullet. I knew it was not going to be a motocross bike, but I was expecting slightly more get up and go, at least enough to get out of it's own way.
Here in Japan they come with all the restrictions. Though any bike 250cc or less does not have to undergo the expensive compulsory road test, so you can modify to your hearts content, which is why I opted for this size (250cc). You can't find WR's used at all and are looking at close to US $10K for a new WR250. KLX's are about US$7K for a new one, so I went with a used 2004 KLX 250 for (high to me but good for this market) US$3K. It was bone stock 14/42 gearing and all with the exception of renthal bars and acerbis bark busters.
So after going to 13/48 gearing, a slip on (RSV), airbox mods, Race tech fork springs (best $90 I have spent so far on this thing), and adjusted the sag for me it is a lot better but still feels under powered to me. I still need to sort the jetting since it seems to be running a bit rich.
My next mod is the BB 351 kit. There is a lot of speculation about reliability of these kits but I have yet to read anything about reduced reliability. And from what I have seen on the internet, when something is bad everyone will write about it. So I am comfortable going with the kit.
People say why not get a DRZ 400 then? I agree in a way since it is such a great bike. However you can't find them used where I am, and new they are over US$10K and they require a $800 inspection every two years. So in the long run, I reckon I will be better off the money spent on my little KLX. This way I can pick up a few bikes for the kids to go riding with me : ) with the extra cash. If only I could find a used XR 100 and XR 80 : (
So if you go into it knowing what the "weak" points of the bike are, you are good to go. Thanks to this forum and others it helped me make an educated purchase that I could live with and really was not all that let down since I did know what to expect.