Is this a stroker crank?

I'm about 99% sure the crankshaft in the first set of pictures is a stroker crank. Can anyone confirm for sure? The balance shaft looks like it's been polished for clearance with the big end of the rod.

Thanks!

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This is another crank I had that's off a different KLX300. This one is not a stroker. Comparing the two, I can't see how the first one isn't a stroker.

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Stroker is just a longer stroke. Just measure the two and compare. Or look up the stroke of the factory crank. I think then you would know for sure.

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