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 for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
Part# 42442 – 2.25″ IN / 2.25″ OUT
Part #42542 – 2.50″ IN / 2.50″ OUT
- Durable Fully Welded 16 Gauge Aluminized Steel
- Aggressive Sound Exterior Exhaust Tone
- Noticeable Interior Resonance
- Excellent Street/Strip and Off Road application
- Made in the USA