Made for ’95–’14 Harley-Davidson Touring models (this specific P/N 502-32 fits ’07–’08 Touring models), the Fat Cat 2-1 is available in chrome or black and features a stepped header system, which starts at 1-5/8 inch at the heads, then to 1-3/4 inch, to 1-7/8 inch at the collector, until finally stepped at 2-1/2 inches where the header meets the muffler. It’s just physics, people! With that said, D&D Performance in Fort Worth, Texas, has the formula for making stock exhaust pipes run away kicking and screaming thanks to its vast line of aftermarket exhaust pipes, most notably, the Harley Touring Fat Cat 2-into-1 exhaust. A 2-into-1 exhaust is great when it comes to performance enhancements amongst Harley Touring model riders.