The Original 40 series muffler delivers an aggressive exterior and interior tone. If you're looking for that original Flowmaster® sound this is the muffler is for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.

• Durable fully welded 16 gauge aluminized steel
• Aggressive Sound Exterior Exhaust Tone
• Noticeable interior resonance
• Excellent Street/Strip and Off Road application