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Okay thanks this used viper I was looking at was a 2015, and this guy was telling me that is has a stroker bottom end and a turbo done by a Yamaha dealer (never specified what brand) and a dynojet programmer so I think I will go with that once I get some more info and documentation, thanks.

Hey guys I was talking to a Yamaha sales rep the other day and i was telling him my plans on buying a turbo viper... He said its not worth it because the 1050cc is apparently not reliable and it wasn't meant to be at the 200-250 hp mark. The guy said I should buy a sidewinder but the price...