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Author Topic: YZ250K Piston differences  (Read 273 times)

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Offline Boyracer

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YZ250K Piston differences
« on: Today at 12:05:38 am »
So I got this K and bought a barrel off ebay and a piston from the US, just wondering why some 250 pistons have cut outs and some dont, it looks like J to T are the same pistons?
Thanks for any help.
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Offline PeterC

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Re: YZ250K Piston differences
« Reply #1 on: Today at 05:59:47 pm »
I suggest a search of the Wiseco pistons. Often later pistons, forged have weight reducing citouts around the wrist pin area, probably to reduce weight and make the exoansion rate uniform. It may be some are cast and some forged
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