gibson swept side exhaust aluminized this swept side exhaust system is made of high quality heavy duty aluminized mandrel-bent tubing to maintain constant exhaust flow for outstanding performance fully welded superflow tm muffler for better volume efficiency t-304 high polished stainless steel clampless slash tip zinc plated 3/8-1/2 factory style hangers and heavy duty clamps engineered and dyno-tested to improve acceleration maximum hill climbing towing and passing power produces maximum torque and 15-20 horsepower gains at low-end with deep aggressive tone exits behind the rear tire near stock location quieter in the cab improves fuel economy and efficiency heavy duty enough for off-road use lifetime limited warranty 50 state emissions legal. auto parts warehouse has extensive gibson exhaust system catalogs.we are now offering free shipping on all gibson exhaust system orders over $50.00. our secure gibson exhaust system catalog is available every hour of everyday. shop with confidence for all your gibson exhaust system needs. gibson exhaust system are in stock and available today. save upto 60% off dealer price on your next gibson exhaust system purchase. our online catalog contains a wide selection of the oem and aftermarket parts you need at unbeatable prices