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Looks like I need to do a top end on my 2008 sportsman 800. Been looking at kits, one of them being Wiseco pistons/jug, as well as a few others. My question is the pdf manual I have for the 08 sportsman 800 lists it as an 11:1 engine (will attach screen shot) however all the factory spec rebuilds I'm finding are for 10:1. I emailed the one company that was selling the Wiseco rebuild kit and he said he had never seen a factory one with 11:1 but he did have the pistons to make it that. So is the manual wrong or if I buy one of these kits that are listed as factory specs 10:1 am I going to lose compression? I don't mind factory rebuild, (would like a little more, but who wouldn't?) But definitely don't want to end up losing power.
 

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