Maintenance & Technical > KX250 / KX125

Changing out elec. carb out for non elec carb.

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scottysg:
As I understand it yes, as there won't be a tps to advance your timing at low rpm and retard it at high rpm. My guess is it will just be more boring and you may lose some max rpm. I would definitely throw on a bigger sprocket up front before changing carbs. Going from 14/49 to 15/40 turned my 250 into a turd. Only problem with gearing it tall like that is these short ratio tranny's don't lend themselves to low speed in first gear. Aka I clutch a ton more at low speeds. But cheap and fast and no retuning!

dave916:
How does gearing it up make it a bit tamer for woods?

Foxx4Beaver:
for the same reason guys run taller gearing on the street....just an example...some of the SuMo guys are running 15/45 and even taller...it makes the acceleration much more gradual and managable compared to running, say 14/48. Top speeds will become greater with taller gearing, but it'll take longer for it to top out...as compared to 14/48, which will accelerate much harder/quicker...but will also reach it's top speed in much less distance.

onekawboy:

--- Quote from: onekawboy on November 29, 2015, 03:25:50 PM ---Does swapping to a non electronic carb on a 2006 KX250 going to make it a bit tamer for woods?
Allowing the power to be more manageable?

I got this idea from Eric Gorr who replied to with a couple other options too -

Curious if anyone has tried it

--- End quote ---

Thanks for the feedback guys -
I have had the bikes suspension re valved for me - aka woods riding and play riding
I am currently running: 13oz FWW - PC works pipe / PC 304 silencer, Rekluse 2.0 , stock gearing 13/51 or 52 I think?

I am not a WOT guy I will open it up where I can -

But my 4T is my main weapon still - ironically though I really want to try and tame it enough to try racing it for a few of the races I do - which I was using it for my club's races we do -open class - and faired pretty well
 

shrubitup:
The 2006 model KX 250 is simply a very aggressive mid top motocross track bike motor. I have had other kx250 before and found different versions of the motor to be much better for woods riding. My favorite thus far have been the 98 / 99 and the 04. They are more torque oriented and have lots of low and power vs strong snap and hit of the late model KX 250.

I suggest if you plan to ride more woods that you shelve the Pro Circuit pipe and purchase a FMF gnarly. Another way to smooth it is to use a Lectron carburetor. They make most smokers feel linear like a four stroke.

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