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Discussion Starter · #1 ·
somebody please tell what to go down to on main jets what does polaris say i think they say two sizes.
whats stock 460s to 440s :banana: :dunno:


2003 pro x 700
 

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440's are stock, 420's should be no problem.

I ran 410's at sea level down to -15 C with no problems.


each sled is different, check plugs and piston wash.
 

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Your in the midwest. I would go down to 420's. When it get's real cold -10f or colder just don't hold it wfo across the lake for 2 miles, and you'll be fine. :div20:
 
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