These pipes are a night and day difference from the stock exhaust. The startup sound is noticeably louder and under heavy acceleration it has a nice deep rumble. At normal cruising speeds it is somewhat difficult to hear the aftermarket exhaust sound. Installation is fairly easy and straightforward, however a Harley-Davidson gasket is required. As compared to the stock muffler, the Cobra is noticeably smaller in diameter as well as lighter in weight. The price is a very good value for just over $200.
You cant beat the sound for the price paid. This is a great exhaust. I am ready to now add the air cleaner and complete the stage 1. Go buy this. You will not regret it.