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 12518304 Super Muffler Stainless Steel - HP-2 304

Part of: Flowmaster Super Muffler Stainless Steel

Other options in this family: Flowmaster 12018409 Flowmaster 12012409 Flowmaster 12412409 Flowmaster 12518409 Flowmaster 12418409

Manufacturer

Picture for manufacturer Flowmaster

Part Number

12518304
13 reviews
Sale Price

$256.95

In Stock (6)

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 for enthusiasts seeking dyno-proven power gains. Engineered with Flowmaster's patented Laminar Flow Technology, this muffler minimizes turbulence and backpressure while creating a deep, moderate exterior tone with minimal interior resonance.

Key Features:

  • 304 stainless steel construction for superior corrosion resistance and durability
  • Laminar Flow Technology maximizes exhaust scavenging for increased horsepower and torque
  • Dyno-tuned internal design optimizes performance across the RPM range
  • Moderate exterior sound level with reduced interior drone
  • Direct-fit chambered design with offset inlet/outlet configuration
  • Backed by Flowmaster's Lifetime Limited Warranty

The Super HP-2 series is ideal for muscle cars, street rods, and performance trucks where maximum flow and aggressive tone are priorities. The 304 stainless steel body and internals ensure long-lasting performance even in harsh environments.

Products specifications

Body Height

4.00

Body Material

304 Stainless Steel

Body Width

5.00

Brand

Flowmaster

Prop 65

Yes

California Proposition 65 Chemical Name

Chromium (hexavalent compounds)

California Proposition 65 Chemical Name

Nickel (Metallic)

Category

Exhaust

Clamps Included

No

Color

Silver

Emission Code

5

Exhaust Tip Quantity

0

Exhaust Tip Quantity

Sold Separately

Finish

Natural

Fitment

Universal

Grade Type

Performance

Hanger Included

No

Heat Shield Attached

No

Inlet Connection

Slip-Fit

Inlet Diameter

2.50

Inlet Inside Diameter

2.50

Inlet Location

Center

Inlet Outside Diameter

2.63

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 Location

Center

Outlet Outside Diameter

2.63

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

Late Model Muscle Car

Vehicle Type

Street/Strip

Vehicle Type

Classic Muscle Car

Vehicle Type

4/6 CYL Engine

Vehicle Type

Street Rod

Vehicle Type

Truck/SUV

Warning

California Proposition 65

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.

A+, great prices

Good so far

WENT FAST AND EASY THANK YOU

Smooth transaction with best price.

First time I've tried these guys. Had trouble getting this product from my normal source (backordered) but Autoplicity shipped quickly and had a better price too! You know I will be back! Thanks!

Looked everywhere for a good price on Warn locking hubs, they were the best price around. Shipped right away.

Great price and easy to use sight

fast and easy

Quick and easy

AWESOME SERVICE,SHIPPING,AND PRICING..COULDN'T ASK FOR ANYTHING MORE!!!

Very happy with my order and how smooth it went!! Thanks again!

great prices

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