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Has my cylinder been bored?

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So I have been tearing my 94' rm250 apart for a top end and most likely new crank bearings.... I have found that my cylinder has .025 etched into the back of it... Could someone before me have bored it over and the machine shop punched .025 on there because that's how much it was bored by?

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Could be, could be marked for any reason at all. Measure it, compare it to the stock size, it's the safest way to do it. 

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