what kinda bike you got and i can tell ya but i know procircuits pipes and silencer sounds nice thats what i have. i havent put my fmf pipe on yet but i'll tell ya when do
I'm using an FMF Gnarly Pipe with an FMF Turbine II spark arrestor muffler. Just slightly more noise than stock but I think it sounds much better. Also gained substantial power and saved quite a bit of weight.