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Polaris Sportsman 500 cylinder

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I'm doing a top end on a '98 Sportsman 500 and wondered if the cylinder is plated or sleeved from the factory? I have not removed the cylinder yet and was curious about my options on going oversized if needed. Any info would be appreciated. Also, where is the cheapest place to get parts? ie piston kit, gaskets

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Nevermind, it's iron. Man, not much activity here compared to Thumpertalk.:bonk:

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