These stainless steel Delta Force 50 Series mufflers provide maximum flow, with increased sound control for high-horsepower race applications. Revolutionary Delta Flow technology has allowed Flowmaster to shrink case sizes for improved ground clearance, and at the same time reduce exterior sound levels and interior resonance, which are major causes of driver fatigue. They are manufactured from highly durable, fully welded 16 gauge stainless steel. These are the mufflers that can deal with 1,000 or more horsepower - the zone where truth and consequences come together at the light!