Flowmaster® has taken the laminar core of our classic HP-2 muffler and wrapped it in a new compact square case.


The new Super HP-2 Series muffler offers the same great performance benefits and moderate tone that you would expect from our laminar flow mufflers, now in a new sleek styling.


These mufflers are available in either a 409S stainless steel case or a polishable 304S stainless steel case and in sizes ranging from 2.00 in., 2.25 in. and 2.50 in.


These mufflers are manufactured in the USA.


Stainless Steel Construction


Dyno Tuned For Maximum Performance


Patented Laminar Flow Technology


Made in USA


Product Attributes

Sound Level Moderate Sound

Body Height (in) 4

Body Length (in) 18

Body Width (in) 5

Inlet Diameter (in) 2.25

Inlet Position Center

Material Stainless Steel

Muffler Series HP-2 Series

Outlet Diameter (in) 2.25

Outlet Position Center

Shape Oval





More Information
Part Type Mufflers & Resonators
Product Line Exhaust
Brand Flowmaster
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You're reviewing:Flowmaster Hushpower 18" Muffler 2 1/4" Stainless #12418409
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