I like a good sounding pipe! Load or quiet does not matter to me. I have a stock exhaust on mine. It sounds like crap. I just ride it on the trails and the power is good. Stock 400ex
On my 450r I had a curtis sparks. It was load but I usually had it on the track so who cares everyones quad was load.
The fmf makes a great exhaust and I know its quiet. I would probly get that because I have heard it and it made power on the quad it was on.It was a 450r I would recomend FMF!!
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