It goes without saying that most of us replace the stock exhaust systems of our motorcycles in order to enhance the engine sound our bikes produce. Of course, along with this improved sound comes marginal power gains, especially if the engine is tuned to accommodate the exhaust, as well as quite a lot of weight reduction.
As with most things related to modifying motorcycles, there are two routes to take when it comes to "upgrading" your exhaust. On the one hand, you can do a hack job by cutting off the muffler and cat, as well as any emissions regulations conformity in the process. The same goes for purchasing a knock-off exhaust system online. On the other hand, you can go for the legal approach and purchase a certified exhaust system from a reputable manufacturer – something that's pretty much your only choice if you live in Europe, as rules surrounding aftermarket exhausts are much stricter over there.
