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Can you revert a YZ144 back to a 125?

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I have a 2010 YZ 125 that I would like to convert to a 144 via Eric Gorr.

I just purchased a new Athena 125 Factory cylinder kit since it was on sale for $350. I know I can just bolt on the 125 kit but the 144 requires the case to be split to grind clearance for the bigger piston. Will the grinding preclude me from reverting back to a 125 if I so desire?

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Call Eric to confirm but I believe he just grinds some of the casting supports out of the way for the bigger crank...so if you want to go back to a 125 just put your stock cylinder and crank back in and you just have a little extra clearance at the crank....but why would you want to do that?

MAX!!!

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You will be fine. My 08 yz125 was a athena 144cc up until last spring. been a 125 again since then and I notice no diffrence in power from my 2010 yz125. case mod is to allow for larger piston done to front of case opening.

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I figure it might be easier to sell as a 125 since many shy away from bored out bikes.

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