40 Delta Flow® - 2.00 Offset In / 2.00 Center Out - Aggressive Sound 1998-pontiac-firebird-esi4271216 The patented Berserker Series is

The patented Berserker Series is designed for high-performance street/track use and is available in various compression and rebound use/vehicle-specific valving

and track testing gives you the best combination of parts for remarkable traction and launch consistency on the street and track

engagement is harsher

This bolt-on emissions-legal system features a pair of our race-proven Outlaw® Series mufflers and dual mandrel-bent 2

40 Delta Flow® - 2.00 Offset In / 2.00 Center Out - Aggressive Sound 1998-pontiac-firebird-esi4271216 The patented Berserker Series isThis 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 standard 40 series. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.