Stock Harley exhausts have baffles, which reduce the exhaust noise. If you are looking to have the loudest Harley exhaust, take a look at Lowbrow's Shotgun Exhaust Pipes. They are straight drag pipes with no baffles. People will surely hear you coming! Lowbrow stocks some of the best 2-into-1 exhaust systems for Harleys that, while not being the loudest, still have a deep, throaty sound and offer superior performance over stock.