The Diamond Eye Exhaust System is a performance exhaust system designed to quickly rid your vehicle of exhaust fumes generated by the fuel combustion process. It prevents gas buildup inside your car by allowing the unobstructed flow of exhaust gases before they start to accumulate in the exhaust pipes. Manufactured using heavy-duty and rust-resistant stainless steel or ultra-hardwearing aluminized steel, this exhaust system is crafted to give you superb service that lasts for years. If you purchase the stainless steel exhaust system from Diamond Eye, you're guaranteed that your exhaust will stay corrosion-free throughout your vehicle's lifetime. This makes it an excellent choice if you're vehicle is used for outdoor and off-road applications. About performance, the stainless steel exhaust tubing also comes with a 4-inch main pipe diameter to facilitate exhaust flow. But if you're less concerned about corrosion and want an exhaust system that offers an even better gas flow, then you might like the aluminized steel performance exhaust system better. This system comes with a 5-inch main pipe diameter-highly recommended for vehicles running at high RPMs (revolutions-per-minute). So if you have a need for speed, then Diamond Eye's aluminized steel performance exhaust system is the product for you.