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Nitirte coated piston rings
Don't settle for anything less than the pinnacle of power and performance
all tensioners
precisely engineered for your Norton 750/850
Polaris Trail Boss 250 250R ES Cylinder Namura Piston Gasket Top End Rebuild Kit YFM600 Nitirte coated piston ringsNA 50000K, 810806, 536M07200, BR8ES, 3087049, 3085541, 3083769, 3083617, 3089277, 3070171, 3070156, 3086757, 3084439, 3084292, 3084033, 3084017, 3084016, 3084015, 3083768, 3083733, 3083676, 3083540, 3082510193564123305, 71420580806, NA 50000R, NA 50000T, NA 50000F, 09 503 1 Revitalize your Polaris 250 with this complete top end rebuild kit. This premium kit has everything you need for a fresh new start, including a new 72mm cylinder and Namura Top End