I was lusting after the MGP Growler and the M4 carbon exhaust, but realized that the MGP one is way too loud. It sounds good on you-tube but at higher revv's it'll sound like a radio controlled aircraft or a motocross bike. I even spoke to TenHut to make my decision concrete.
So the MGP is out. I love the stock sound of the ninja. I might just order the M4 but not anytime soon. Try and see some video's of the M4 exhaust. They sound deep and nice. MGP growler is more like a straight pipe. There is almost zilch restriction on that pipe and you'll get fined more often than not by cops, not to mention that your neighbors will want to kill you very soon for disturbing them.

All the best.
P.S. I've always wanted an inline four bike just for the growl and hair raising sound but that's probably another lifetime away.




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