Want to feel more horsepower and make your motorcycle roar every time you twist the throttle? The Rinehart Racing Xtreme True Duals Exhaust system provides an open, free-flowing stepped header design that scavenges exhaust to make your Harley-Davidson touring bike operate at peak performance. The equal length head pipes control gas temperature to ensure one cylinder isn't working harder than the other, and the rider-friendly header configuration along with full-coverage, laser-cut heat shields keep heat away from the rider's and passenger's legs. The muffler's anti-reversion louvers also reduce negative pulse and boost torque. This system features 12mm and 18mm 02 ports for dyno tuning and proper measurement of the air-to-fuel ratio, resulting in better engine efficiency. This innovation also eliminates the need for bung adapters. Like all Rinehart exhaust pipes, the Rinehart Racing Xtreme True Duals Exhaust are American-made pipes for American-made bikes Open, free-flowing stepped header design Equal length head pipes for optimal performance Keep the heat off your legs with low routing and full-coverage, laser-cut heat shields 12mm and 18mm 02 ports eliminate need for aftermarket bung adapters