Product Description
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.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|Provides an inexpensive performance upgrade by reducing exhaust torque losses often caused by straight pipes|Sold as a pair, easy to install without altering the sound of the exhaust system
