Great Product. 5 stars for Ease of Installation, Style, and Durability. However, 4 stars for performance because it takes away from your back pressure which makes for a rougher start of your bike without a fuel mapper. This part gets a 4 for power as it does not increase the power of the bike. This part does make the bike sound much better with the stock headers/cat but its overly obnoxious with after market headers like an 05 header mod, MJS headers, or mid pipe. I do recommend this exhaust, just giving you all the info. on it. Hope this helped!