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Help me find a piston! 84 XT250

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Hi fellas, I'm having trouble locating a piston for a bike I shouldn't be fixing, a 1984 XT250. It's pretty much an XT350 with a smaller bore, and I think a different primary reduction ratio in the gearbox.

Anyway, I'm not having any luck finding a piston. I need a 1mm oversize, and there are 2 part numbers that fit -

XT250 - 30X-11638-01-00

SRX250 - 51Y-11638-00-00

Bikebandit can't get one, and I've been looking EVERYWHERE for one.

I have everything else I need to fix her up, but this kind of puts a hold on things.

I'm open to NOS OEM, Aftermarket, even custom. Does anyone know where I can locate one?

I have the old .50mm over piston that a custom shop could copy, (minus the big hole in the middle hah).

Can anyone shed some light?

Edited by Fracture

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I have just found out that TTR250's have the same bore and stroke. I wonder if there is a chance that will fit? hmm more digging to do...

edit.

TTR250 piston does not fit. The compression heights differ by around a tenth of an inch. I'd have to take around .105" off the top of the jug to make the TTR piston fit. Can I do this without fubaring the cam chain tension?

Edited by Fracture

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