Rinehart 4 True Duals Exhaust For Harley Touring Rinehart Racing wraps powerful exhaust system performance in a classic look and sound with the Rinehart Racing True Duals Exhaust with 4 Mufflers. Designed with Harley-Davidson touring bikes in mind, this Rinehart exhaust system utilizes stepped header technology to scavenge exhaust, drawing it out of the cylinder and allowing the engine to operate at peak performance. Translation: more horsepower. Even better, it's fitted with anti-reversion louvers to eliminate negative pulse and help with engine efficiency. Full-coverage, laser-cut heat shields provide a clean, sleek look, and the 12mm and 18mm ports are placed for dyno tuning and proper measurement of the air-to-fuel ratio, increasing the engine performance further and eliminating the need for aftermarket bung adapters. And, as always with Rinehart, these are American-made pipes for American-made bikes. Features: Stepped header design for increased horsepower Anti-reversion louvers to eliminate negative pulse Full-coverage, laser-cut heat shields 12mm and 18mm ports eliminate need for aftermarket bung adapters Note: End cap logo may not match image, may be engraved or printed.