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Seriously though they don't sound unlike any other muffler. Well except a D&D and CFR. I think the Kuryakyn name will shy a lot of people away from it.
I just bought the Slipstreams. Haven't got to ride bike yet but the build,fit and finish is great. Can't wait to see how they sound on the road. I was leary because of the Kurtakyn name but very impressed so far. And so many tuners recommend them now.