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Discussion Starter #1
I have a 2009 Sportsman 500 HO and was curious what the compression ratio was. I have noticed that the exhaust coming out of the muffler has some good "kick" to it. Seems to have a lot of compression. :)
 

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Your sportsman 500 has a compression ratio of 10.2 to 1
 

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Wow thats quite low actually.
 

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