Looking to build up my Z this winter. I want a good pipe for trail use, that will eventually get porting to go with it.
So which one will make good power, but not rattle the fillings out of my teeth?
Left the 2 strokes in the past so I did't have to listen to that high pitched screem any more. Need a 4 stroke pipe that makes power, but not headaches.

 

fmf quite power core 4

 

yeah or the FMF megamax

 

See the Jan issue of ATV Rider. It has a shootout of quiet pipes. Looked like the Yoshi full system was the best.

 

i have a z400 and i just got the yoshi slip on..its pretty quiet..tons of low and mid power..love the way it looks..my buddy has a z400 and he just got the e series slip on.. i dont think it has as much power on the low and mid range but it is a little less loud..i got the yoshi at kand k atv im mass..great price at $299..good luck.