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Author Topic: polaris piston  (Read 433 times)


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polaris piston
« on: June 29, 2021, 05:19:06 pm »
Hey guys found this in an 85 600 Indy is this a Polaris piston I think it is first oversize I've never seen a piston marked like this under the piston it has Made in Japan  and ART any guesses? all three pistons are marked the same  thanks
« Last Edit: June 29, 2021, 05:20:41 pm by 2slow »
I name this here fork "Pittsburgh Nellie"; a Welsh Lady of the night who could do things with her one good arm that'd make you forget that *thing* on her neck


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    Re: polaris piston
    « Reply #1 on: June 30, 2021, 05:41:28 am »
    ART was an OEM japanese Piston supplier. And Polaris pistons had an arrow pointing towards the mag side. .25mm is +.010" aka first over.
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