My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Flowmaster 12018409 Super Muffler Stainless Steel - HP-2 409

Part of: Flowmaster Super Muffler Stainless Steel

Other options in this family: Flowmaster 12012409 Flowmaster 12412409 Flowmaster 12518409 Flowmaster 12418409 Flowmaster 12518304

Manufacturer

Picture for manufacturer Flowmaster

Part Number

12018409
12 reviews
Sale Price

$204.95

In Stock (10+)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Flowmaster Super HP-2 Muffler delivers maximum performance and aggressive sound in a compact, straight-through design. Constructed from durable 409 stainless steel, this high-performance muffler is engineered for enthusiasts who demand both power gains and distinctive exhaust tone.

Key Features:

  • Laminar Flow Technology for reduced backpressure and increased horsepower
  • 409 stainless steel construction for durability and corrosion resistance
  • Dyno-tuned internal design optimized for maximum performance
  • Straight-through perforated core design
  • Aggressive exhaust note with minimal restriction
  • Backed by Flowmaster's Lifetime Limited Warranty

The Super HP-2 series features Flowmaster's patented Laminar Flow Technology, which reduces turbulence and maximizes exhaust flow for measurable power gains. The straight-through design makes this muffler ideal for racing applications, modified street vehicles, and performance builds where maximum flow is critical. The 409 stainless steel body provides long-lasting durability while keeping costs competitive compared to premium alloy alternatives.

Products specifications

Body Height

4.00

Body Material

409 Stainless Steel

Body Width

5.00

Brand

Flowmaster

Prop 65

Yes

California Proposition 65 Chemical Name

Nickel (Metallic)

California Proposition 65 Chemical Name

Chromium (hexavalent compounds)

Category

Exhaust

Clamps Included

No

Color

Black

Emission Code

5

Exhaust Tip Quantity

0

Exhaust Tip Quantity

Sold Separately

Finish

High-Temperature Paint

Fitment

Universal

Grade Type

Performance

Hanger Included

No

Heat Shield Attached

No

Inlet Connection

Slip-Fit

Inlet Inside Diameter

2.00

Inlet Location

Center

Inlet Quantity

1

Inlet Type

Weld-On

Inlet Type

Clamp-On

Muffler Series

HP-2 Series

Muffler Type

Laminar Flow

Outlet Connection

Slip-Fit

Outlet Inside Diameter

2.00

Outlet Location

Center

Outlet Quantity

1

Outlet Type

Single

Part Type

Exhaust Muffler

Product Type

Street Mufflers

Reversible

No

Shape

Oval

Sound Level

Moderate

Sub Category

Mufflers

Tunable

No

Universal Or Specific Fit

Universal

Vehicle Type

Classic Muscle Car

Vehicle Type

Street/Strip

Vehicle Type

4/6 CYL Engine

Vehicle Type

Late Model Muscle Car

Vehicle Type

Street Rod

Vehicle Type

Truck/SUV

Warning

California Proposition 65

Awesome Prices! were over $40.00 cheaper on my part I ordered from them than anyone else online. I will be back for more parts that's for sure!

After researching and finding the bumper I wanted, I spent some time looking for the best price. Autoplicity was not only the best price the beat the competitors by a 100 dollars. Big Savings.

hey had what I needed at a low price and were easy to deal with.

USER FRIENDLY GREAT PRICE FAST SHIPPING HIGHLY RECOMMENDED PEOPLE TO DEAL WITH

I reciently ordered some spark plug wires from Autoplicity and I must say it was a great experience. The shipping was fast and they had the best price I could find. I will def order parts for my truck from them again.

Easy to navigate and great prices.

I do not want to share my Amazon information!

easy to find items and check out. So far so good

Very easy mobile site!

I would definitely recommend Autoplicity. I ordered Thule bike racks (THU-518), and the products arrived in 2 days in perfect condition. Plus the prices (along with free shipping) were the best on the web.

great!

good

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy