This two chamber design incorporates Flowmaster's patented Delta Flow technology. The " Delta" deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over original 40 Series.
Constructed of 16-gauge aluminized steel and fully MIG-welded for maximum durability. Durable Fully Welded 16ga Aluminized Steel Reduced Interior Resonance Excellent Street/Strip And Off Road Application No Internal Packing To Blowout Race Proven Patented Delta Flow Technology.