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Vehicle Info NeededFLOWMASTERPART NUMBER: 389-12518304
Super HP-2 Standard Muffler 2.5" Inlet/Outlet
$25695
Ships on 09/24/2026
Lowest Price GuaranteeSuper HP-2 Standard Mufflers
Super HP-2 Standard Muffler 2.5" Inlet/Outlet Width: 4" Height: 5" Length: 18" 304S Stainless Steel
FLOWMASTER MUFFLERS 12518304 Features:
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 covered by Flowmaster's Lifetime Limited Warranty.- Stainless Steel Construction
- Dyno Tuned For Maximum Performance
- Lifetime Limited Warranty
- Laminar Flow Technology
Part TypeMuffler
BrandFLOWMASTER
Package Height4.9
Package Width5.9
Package Length24.8
Weight10.25 PG
Part CategoryPerformance Parts
ShapeOval
Exhaust Tip Quantity0
Outlet Quantity1
Inlet LocationCenter
Muffler TypeLaminar Flow
Inlet PositionCenter
Inlet TypeWeld-On
Inlet Size (In.)2.5
Heat Shield AttachedNo
Outlet StyleStandard, without tip
Muffler FinishNatural
Body Length18 in.
Muffler Count1
Inlet Outside Diameter2.63 in.
Inlet Diameter2.50 in.
Clamps IncludedNo
Inlet Quantity1
Sound LevelModerate
FinishNatural
Outlet Outside Diameter2.63 in.
Muffler MaterialStainless steel
ReversibleNo
Universal Or Specific FitUniversal
Outlet Size2.5 in (63.5 mm)
Hanger IncludedNo
Outlet Diameter2.5 in (63.5 mm)
ColorSilver
Muffler SeriesHP-2 Series
TunableNo
QuantitySold individually
Overall Length24 in.
Material304 Stainless Steel
Case Length18 in (457.2 mm)
Internal ConstructionPerforated tube
Case ShapeOval
Body Width5 in.
Outlet Inside Diameter2.50 in.
Body Material304 Stainless Steel
Inlet Inside Diameter2.50 in.
Outlet LocationCenter
FitmentUniversal
Body Height4 in.
Outlet TypeSingle
Part FitmentUniversal
Outlet PositionCenter
Vendor Part Number12518304
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
