Flowmaster 9425422 - 40 Series Delta Flow Chambered Muffler

40 Delta Flow Muffler - 2.50 Center In / 2.25 Dual Out - Aggressive Sound This two chamber design incorporates Flowmaster's 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.