Standard 40 Series - Two Chamber

This is the most “aggressive” sounding street/strip muffler that Flowmaster offers. If you're looking for attention, this one will get you noticed. The standard 40 series has an “aggressive rumble" and will generally resonate inside the vehicle around 1800-2000 rpm’s, and again at 2400-2600 rpm’s.   Constructed of 16 gauge aluminized steel and fully mig-welded for maximum durability

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