View Full Version : Piston Sizes
AngusJustice
04-09-2008, 03:39 PM
Is a 75mm piston stock for a 1985 honda atc 250r if not what over bore is it? Thanks!
masonryman13
04-09-2008, 03:46 PM
i think stock is a 66.00mm. i have no idea how much over 75 is but its a butt load.
AngusJustice
04-09-2008, 04:03 PM
Sorry its 0.75mm stamped on the top so I'm thinking its once over if anyone knows please let me know!
masonryman13
04-09-2008, 04:34 PM
I got this from ebay
HONDA 85-86 ATC250R Piston (.030) 66.75mm ATC 250R
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