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xr 100 engine swap

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will an xl 125 engine fit in an xr 100.what differences are there ,also what advantages or dis advantages?

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Since no one esle has answered, I will take a shot. At least it will bump this for thread for you.

I don't think so. Not without some cutting. A 120 kit for the 100, a cam and a bigger carb would be easier.

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yes the xl 125 is based on the xr 200,xl 185 and so on. I tried to stick a xr 200 motor in my xr 100 and it was to big and would of taken alot of modifing to work.

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depends on what year xl 100 you got. i'm pretty sure a 125 can fit in my 1979 xl 100, without much needed work.

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