Currently have a Polaris exhaust on my rzr but also has FMF written on the silencer along with Polaris. Guessing this is a upgraded exhaust, or at least the silencer. Anyone familiar with this exhaust system and any recommendations appreciated? I’m looking to find a stock exhaust to put back on it if anyone may have one they want to get rid of. It’s not really loud but louder than I would like it to be.