Straight pipes sound sweet, but for street use they're a performance disaster. Here's an inexpensive way to get back some of that lost horsepower and gas mileage without affecting the sound.

• Provides an inexpensive performance upgrade by reducing exhaust torque losses often caused by straight pipes
• Designed to restore horsepower and improve gas mileage on street motorcycles with straight pipe exhausts
• Fits Most 1 3/4 in. O.D. Twin Cam, Evolution Big Twin and XL Exhaust Systems for Harley-Davidson models
• Sold as a pair, easy to install without altering the sound of the exhaust system