Free Shipping on Auto Parts Orders Over $75.
Order by 11 PM EST
for Same Day Shipping!
Flowmaster 40 Series Original Mufflers
Product images may differ from actual product appearance.
The muffler that started it all: Flowmaster's 40 Series. Made of aluminized or stainless steel, these are the most aggressive sounding street/strip mufflers in the Flowmaster lineup. They also create resonance in the vehicle so, if you want "surround sound" from your exhaust, look no further.
For street and strip applications
Loud, aggressive sound with interior resonance
Case: 13" L (4" Thick)
Overall: 19" L x 9.75" W
Aluminized steel or 409S stainless steel (stainless has limited lifetime warranty)
Stainless mufflers are painted dark grey metallic to improve resistance from the elements
MIG welded for maximum durability
Narrow Results for Flowmaster 40 Series Original Mufflers