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Thermos O flask

250 Engine in a wr400?

2 posts in this topic

as long as it's in the right year range, yes.

Frames are the same between the small and big bikes, YZ and WR for the appropriate years. For instance a 1998-2002 frame and any engine from those years will bolt right up. 03 to 05 engines might bot right up too....I don't think the main frame changed until 06...

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