1984 YZ80

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12/3/2018 8:16 AM

I recently purchased a 1984 YZ 80. With the purchase the seller included a spare cylinder. The cylinder on the bike now has the same markings as the one the seller included. The seller told me they put a bigger piston in the motor but could not answer any questions about it. I am looking to restore this bike and I assume the cylinders I have are not original to the bike. Does anyone have any information on the cylinder in the picture. Thanks Photo