Originally Posted by markcr

Well, ok, sometimes I'm a moron but don't tell my wife. I still have her convinced I'm brilliant...

Originally Posted by 09KLXowner

lol, nah it's not that easy.

I'm stock cylinder. the stock gearing is doable off-road, but the 13 is so good for low-end acceleration and wheelies. installing the 13-tooth sprocket to a stock bike is the best bang for the buck mod you can do imo. it's noticeable immediately how the power is rearranged.

Originally Posted by je2000

Dang....I knew it. That would be too easy right?

I'm only 3 months into riding so the stock gearing is still right for me in the dirt/sand/mud/rocks. It's starting to get very predictable on the street. On the trails I'm basically in 2nd gear, slipping the clutch the whole time, unless I'm nearly stopped and need to power out of some "stuff"

Originally Posted by 09KLXowner

here's the dirty of it- any sprocket made for a Honda XR650L will fit any KLX250S whether it's an older '06 or '07 or the new '09. I know, I've had both and the same sprocket was ordered and went on both bikes. When you get the sprocket, you'll know if it's the correct one by the look of the sprocket. The correct one will have a raised shoulder that goes towards the cases. If your sprocket doesn't have that shoulder, you have the wrong sprocket. Taking the sprocket off is cake once you break it loose. Just loosen the rear wheel, slide the axle almost out and push the rear wheel forward lifting the chain off the sprocket. Some just pop the master link out of the chain but I hate messing with that tiny thing as it seems like it flies off and I lose it in my garage. Plus, you'll have to loosen the rear wheel anyways to adjust the chain as it will require you to tighten the chain since there is one less tooth. It ends up to be around a half notch on the swingarm if you're looking at the '09.
Also, the same sprocket that fits a Ninja 250R up to '07 will fit our KLX's. FYI, the KLX300 front sprocket will NOT fit. The rears are the same however, KX bikes thru KDX to our KLX's. They are all interchangeable.

now with that said, you still need to use the search function, that's what it's for. you not only need to know what part fits, but how it affects the bike which is very important for this mod because it pretty much takes the roadability of the bike away. If you use your bike on road much, you may want to steer clear of it as it makes first gear all but useless and it shoots the rpms up to around 7K at 60mph vs 6K with the stock 14 on. But, the bike wheelies great with the 13 on. I go back and forth but for me, most of my commuting is in town at speeds rarely approaching 55mph so I'm good with the 13.

Originally Posted by go cytocis

To anyone looking for a Canadian retailer with 13T C/S sprockets of the S & SF, Gnarly Parts has them (part # 1021470075) for $12.95cdn.

Gnarly Parts and Accessories, Inc

I have been a customer on several occasions and have been suitably impressed...

Originally Posted by IDRIDR

did you check for the XR650L?