07 kx250AF Friday!

[gisclair615]

Buying a 07 kx250AF friday. It has the 03 kx250 motor in 07 kx250F frame. I currently have 03 kx 125 and a 07 kx250. How much of a diference in power and handling will the 250AF be compared to my 07? Anything special I should look for when going view the bike? I hear the 03 motor isnt as good as the 07. Any input guys? Thanks

[stevea100m]

I just built one using the 06 kx250f chassis and the 03 motor. I have ridden the 07 motor as my dad has one and dont care for it because it has a major hit. The 03 250 motor to me is more mellow and easier to ride once you jet it to your altitude. The bike itself is the best is literally the best bike I have ever ridden. It tracks very true and you have room to move around if your a tall guy. One major difference I noticed from my 03 125 and 03 250 is the aluminum frame seems more nimble and easier to throw around

[don46]

The 03 motor is the older design, there was a redesign in 05, some say better some say worse, it probably depends on who you are and what your riding. I built a 250af for my wife using a 06 250f frame and a 06 250 motor, the bike felt tiny and easy to handle but in the end turned out to be to much bike for her, I was afraid she'd get hurt so I built her hybrid kdx much easier for her to ride

[gisclair615]

Thanks for the input guys. Yeah im really short 5'5. . I was thinking that the AF bike would be lighter then my 07 but it seems that its actually heavier due to the two stroke motor being heavier(seen that in a post). Glad to hear that it seems to handle well. I was worried about its handling. Does it handle more like a 2 stroke or 4? Does it get better traction?

[stevea100m]

It handles like a two stroke and to me it seems like when your on it it doesnt want to wheel stand out of the corners as much as the steel frame

[gisclair615]

Ill be picking it up friday then to the track Sunday to get some seat time on this beast.

[gisclair615]

Got a lil seat time on it. Got 3 track days in. Did it take a while to get use to the way it corners? It def corners better then my 07 bc I noticed it stays true in ruts better but it feels like the front wants to wash out at times. I havnt got the suspension set for my weight yet so im sure that will improve once set. I love it but its going to take a while to get use to it. It feels so much bigger then my 07. Do you have any pics of your silencer brackets on the back? For some reason my silencer came loose and fell off yesterday while on the track. Trying to see how  others is set up.

[gisclair615]

Haven't been to the form in a while. I figure I'll post some pics. It is indeed a 06 frame and 03 motor. The guy I Purchased it from said 07 but the frame had the lined running through it like the 06 aluminum frames.

[KXDINO]

If you find the 05 onwards hit to hard , try a 03 powervalve shim , it makes it smoother at the hit. We modify these motor not only for more hp , but a broader , easier to use powerband , with the right mods , these are good engines , we try different mods as we can afford them , with 8 kxs and 2 klx bikes its a balancing act who gets the most money thrown at them. So much to do with so little money.