40 Delta Flow® - 2.00 Offset In / 2.00 Offset Out - Aggressive Sound 2014-audi-a4-esi6454611 25 Thread - 30 mm

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40 Delta Flow® - 2.00 Offset In / 2.00 Offset Out - Aggressive Sound 2014-audi-a4-esi6454611 25 Thread - 30 mmThis 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.