Flowmaster 53531-12 - 30 Series Delta Force Race Muffler

30 Series Race Muffler - 3.50 Offset In / 3.50 Center Out - Aggressive Sound The Delta Force 30 series race mufflers utilize Flowmaster's Delta Flow technology and are designed for race applications needing to meet the most stringent decibel level requirements at the track. These mufflers have excellent power characteristics with maximum sound reduction qualities. Please call the Flowmaster tech-line for assistance with specific dB requirements and applications.