Flowmaster 40 Series Race Muffler 409S - 3.50 Center In / 3.50 Center Out -Aggressive Sound HANS DMI Rotors are exceptionally lightweight

DMI Rotors are exceptionally lightweight

8 to 18 volt range

1999-2006 GMC Sierra 1500 78

Use with Allstar ALL31135-31140 adapter fittings

5 x 1 in Forward

Flowmaster 40 Series Race Muffler 409S - 3.50 Center In / 3.50 Center Out -Aggressive Sound HANS DMI Rotors are exceptionally lightweight40 Series Race Muffler 409S 3. 50 Center In 3. 50 Center Out Aggressive Sound Universal Race Muffler Not a direct fit. Some adaptation required. The Delta Force 40 series race mufflers utilize Flowmaster's patented Delta Flow technology and feature excellent power characteristics with good sound reduction qualities. Recommended for all racing applications where mufflers are required with a substantial decibel reduction over open headers. Please call