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 818162 American Thunder Axle-Back Exhaust System with Dual 4-Inch Tips

(2024-2025 Ford Mustang)

Part of: Flowmaster American Thunder Axle-Back Exhaust System

Other options in this family: Flowmaster 817942 Flowmaster 817746 Flowmaster 817460 Flowmaster 17421 Flowmaster 817743

Manufacturer

Picture for manufacturer Flowmaster

Part Number

818162
7 reviews
Sale Price

$1,171.95

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 American Thunder Axle-Back Exhaust System delivers aggressive sound and proven performance gains for enthusiasts seeking a bolt-on power upgrade. This complete axle-back system is engineered with precision mandrel-bent tubing and high-quality stainless steel construction for durability and maximum exhaust flow.

Performance Features:

  • Super 44 series performance muffler produces a deep, powerful exhaust note
  • Delivers up to 8 horsepower and 6 lb-ft torque gains over stock exhaust at the rear wheels
  • 3.00-inch diameter mandrel-bent tubing maintains optimal exhaust velocity and flow
  • 16-gauge 409 stainless steel construction for long-term corrosion resistance

Installation and Styling:

  • Direct bolt-on design utilizes factory hanger locations for straightforward installation
  • Includes all necessary mounting hardware for at-home installation
  • Dual 4.00-inch polished stainless steel exhaust tips add a premium custom appearance
  • Backed by Flowmaster's Lifetime Limited Warranty

This axle-back system provides the perfect balance of performance, sound, and style without requiring modifications to your vehicle's stock exhaust hangers or mounting points.

Products specifications

Fits

2024-2025 Ford Mustang

Brand

Flowmaster

Prop 65

Yes

California Proposition 65 Chemical Name

Chromium (hexavalent compounds)

California Proposition 65 Chemical Name

Nickel (Metallic)

Catalytic Converter Quantity

0

Category

Exhaust

Clamping Type

Flat Band

Clamps Included

Yes

Emission Code

5

Exhaust Series

American Thunder

Exhaust Tip Color

Silver

Exhaust Tip Connection

Welded

Exhaust Tip Cut

Angled

Exhaust Tip Edge

Angle Cut

Exhaust Tip Finish

Polished

Exhaust Tip Intercooled

No

Exhaust Tip Length

5.25

Exhaust Tip Material

304 Stainless Steel

Exhaust Tip Quantity

2

Exhaust Tip Resonated

No

Exhaust Tip Shape

Round

Exhaust Tip Wall

Double Wall

Exit Style

Dual Out Rear

Finish

Painted

Gasket Or Seal Included

No

Grade Type

Performance

Hangers Included

Yes

Inlet Type

Clamp-On

Mount Type

Uses Factory Hangers

Mounting Bracket Included

No

Muffler (Left) Body Width

9.50

Muffler (Left) Type

Reflection

Muffler (Right) Type

Reflection

Muffler Body Length

10.25

Muffler Body Material

409 Stainless Steel

Muffler Body Shape

Oval

Muffler Color

Black

Muffler Finish

Black High-Temperature Paint Finish

Muffler Flanged Inlet

No

Muffler Flanged Outlet

No

Muffler Inlet Connection

Slip-Fit

Muffler Inlet Location

Center

Muffler Outlet Connection

Slip-Fit

Muffler Outlet Location

Dual

Muffler Outlet Quantity

1

Muffler Overall Length

16.00

muffler part number

Kit Only

Muffler Quantity

2

Muffler Series

Super 44

Muffler Type

Reflection

Pipe Color

Black

Pipe Material

409 Stainless Steel

Product Type

Exhaust System

Sound Level

Aggressive / Moderate

Spring Bolt Kit Included

No

Sub Category

Exhaust and Tail Pipes

Tail Pipe Quantity

Dual

Tail Pipe Quantity

2

Tail Pipe Tapered Outlet

No

Tip Logo

Embossed

Tip Style

Double wall

Type

Axle-Back

Valve Included

No

Valve Type

Not Applicable

Warning

California Proposition 65

Good service

Good experience

Best prices I've found

FOund your site. Quick easy and fair price. I'll be back.

Easy checkout, good price.

EASY SHOPPING EXPERIENCE!

We shall see

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