Flowmaster Original 40 Series Muffler
The muffler that started it all, the original 40 Series Muffler is an aggressive sounding street/strip muffler that delivers a powerful “Flowmaster Sound” you’ve heard so much about it. If you really want to hear your exhaust system and that great muscle car tone – from both inside and out of the vehicle – the 40 Series is for you. The body measures 4" x 9.5" x 13" with options of 2.25" to 3" inlet/outlet sizes.
- The original high performance Flowmaster muffler
- Aggressive sound for the enthusiast you likes their exhaust LOUD
- Available in either aluminized steel or 409S Stainless
- Stainless steel mufflers covered by limited lifetime warranty
- Fully MIG welded for durability
More Flowmaster in store, even if you don't see it here! Give us a call toll free: 1-877-471-6700 or visit one of our Speed Shop locations.