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11/25/2007
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Athens, GA
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4275th
Edited Date/Time
12/20/2018 6:29pm
Looking at picking up a 2007 KX250 two stroke. I realize that Kawasaki made pretty much zero changes in the last couple of years it was available.
What needed to be fixed on this final era KX250 to make it great?
What needed to be fixed on this final era KX250 to make it great?
My favorite handling bike that I have ever ridden.
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The Shop
The motor in those KXs is pretty impressive though
Engines are quite stout.
*note - I do strip out shifters like crazy though. Steel, aluminum, billet, doesn't matter. After every weekend of riding I have to tighten the shifter and eventually it stretches out, there's no room left and the splines strip. Could just be the shaft teeth being worn out or riding style but I've never had this problem on any other bike.
Mine has been a solid bike. I've owned it for 7 years now and besides the occasional top end and replacing parts I break it's still going strong. It also takes parts from 03-18 for a lot of stuff. Most 4 stroke stuff, while maybe different, bolts right on.
Build link: https://www.vitalmx.com/forums/Moto-Related,20/2005-KX250-2-Stroke-Buil…
Some lesser offset clamps will help handling.
Check the power valve spring.
The motor is midrange and up with a good hit. It's fun for the skilled pilot.
I have an 05 I bought new.
Pit Row
My bike has an FMF Fatty pipe abd a v-force reed system, previously had a turbine core spark arrestor but i just replaced it with a stock oem silencer (freshly packed & cleaned out) and went from the stock 52 to a 48 pilot jet. Coupled with the silencer swap and holt crap!!! That bike runs like a scalded raped ape now!! Explosive off the bottom/mid almost hard to cintrol but fun to ride and it pulls into a decent top end that still flattens out a little still have the stock main jet until i redo the top end with the vertex piston kit i won on the pulpmx show this last monday night. Gonna need to do the 1mm spacer addition/powervalve mod to sort of smooth that transition out and i believe the engine will be golden.
Suspension is still stock and feels good but has this dead feeling at any good sized impact thats in the 3/4 part of the stroke the bike feels dead and kind of holds up in this part of the travel for a split second longer than ive ever experienced. Its a weird sensation bec my rebound settings feel like theyre in the ballpark for everything else. Does that make any sense??
Test rode an 05 model (05-07 same chassis / engine) I think in 07 & couldn't get off the bike bike fast enough to give it back to the owner. One of the worst handling bikes I've ever ridden in 4 decades of riding MX. The engine had a narrow powerband if I recall with just a midrange hit. A CR or YZ in those yrs. is a much better platform to start with. The RM would be my 3rd choice.
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