Seller notes

NA-50000K4 .040 Over Bore Top End Rebuild Kit Fits The Following Polaris Models: 250 Trail Boss 1986-1999 250 Trail Blazer 1990-2006 250 Explorer 4x4 2000-2002 INCLUDES ALL OF THE FOLLOWING ITEMS: Namura Technologies Piston Kit #NA-50000-4 which includes: Namura Technologies Cast 040 Over Bore Piston 73.00mm Bore, Wrist Pin, Circlips, Piston Rings -Namura pistons have Molybdenium/Teflon skirt coatings to minimize resistance for extended life. -All Namura pistons have anodized domes and high sili...

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