I ride a 99 300 exc with a fmf gnarly pipe and a stock silencer. The silencer needs replaced and I'm thinking about the fmf turbine core ll-Q. Anybody out ther use this combo? Is this silencer/spark arrester any good? Does anyone know if it's the type with the screen inside or the spinny deal? It's supposed to be really quiet which really turns me on! :eek: Thanks for any replies. :aj: