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Author Topic: M90 piston o-ring upgrade?  (Read 162 times)

ShadetreeMotorcycle

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Re: M90 piston o-ring upgrade?
« on: October 29, 2020, 11:17:21 am »
Thank you for the info on the stock o-ring....I feel that trying a Teflon o-ring is pretty low risk, as if I don't like it I can always go back to stock....I am shooting for the ultimate in slow-run or fewest hits per minute. Thanks!