This classic 2-into-1 exhaust system is at the top of the class. Real world performance gains matched by the perfect deep throaty rumble you expect from the Harley-Davidson V-Twin power plant. And it looks as good as it sounds with its 222-degree heat shields and our unique collector heat shield that covers the collector area. The 4-inch muffler body is capped off with a chromed beveled billet tip. We construct the muffler body in such as way that it will not discolor. In fact, the entire system is guaranteed not to turn blue for the life of the product so with a bit of care it will still look like new years later.