Can anyone help identify this rear storage box? It is my uncle's. And I would like to get one just like it since it works so well. He doesn't have any more info either. I could not find a model number or other info on it. It does say Polaris. It is about 8 years old. It is quite large and...

Hey guys I just got a brand new 525 outlaw. Just broke it in yesterday and today. The only bad thing is that it loves to backfire every time I take my thumb off of the gas. Is there anything I can do or should I bring it to the dealer as it is only a week old. thanks guys.