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Flowmaster 817574 American Thunder Cat-Back Exhaust System

(1986-2004 Ford Mustang)

Part of: Flowmaster American Thunder Cat-Back Exhaust System

Other options in this family: Flowmaster 17395 Flowmaster 817568 Flowmaster 17213 Flowmaster 818196 Flowmaster 818176

Manufacturer

Picture for manufacturer Flowmaster

Part Number

817574
11 reviews
Sale Price

$584.95

In Stock (7)

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Product Details

The Flowmaster 817574 American Thunder Cat-Back Exhaust System delivers an aggressive sound and improved performance for your vehicle. This complete exhaust system features Flowmaster's patented Delta Flow technology, which uses a unique internal design to reduce backpressure while producing the signature Flowmaster tone.

Key Features:

  • Stainless steel construction for superior corrosion resistance and long-lasting durability
  • Delta Flow technology for maximum exhaust flow and aggressive sound
  • Complete cat-back system includes all necessary pipes, muffler, and hardware
  • Compatible with most modified suspension setups
  • Backed by Flowmaster's lifetime limited warranty

This American Thunder series exhaust system is engineered for enthusiasts who want a deep, aggressive exhaust note combined with real performance gains. The mandrel-bent tubing ensures smooth exhaust flow, while the precision-engineered hangers and brackets make installation straightforward. Each system is designed to bolt directly to your vehicle's factory mounting points for a clean, professional fit.

Products specifications

Fits

1986-2004 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

Drive

2WD

Emission Code

5

Exhaust Series

American Thunder

Exhaust Tip Color

Silver

Exhaust Tip Intercooled

No

Exhaust Tip Quantity

0

Exhaust Tip Quantity

Sold Separately

Exhaust Tip Resonated

No

Exhaust Tip Shape

Round

Exhaust Tip Wall

Single Wall

Exit Style

Dual Out Dumps

Finish

Natural

Gasket Or Seal Included

No

Grade Type

Performance

Hangers Included

Yes

Heat Shield Included

No

Inlet Diameter

2.50

Inlet Type

Flanged

Mounting Bracket Included

No

Muffler (Left) Body Width

9.50

Muffler (Left) Type

Chambered

Muffler (Right) Type

Chambered

Muffler Body Length

13.25

Muffler Body Material

409 Stainless Steel

Muffler Body Shape

Oval

Muffler Color

Black

Muffler Finish

Black High-Temperature Paint Finish

Muffler Flanged Inlet

Yes

Muffler Flanged Outlet

No

Muffler Inlet Connection

Loose Flange

Muffler Outlet Connection

Slip-Fit

Muffler Outlet Quantity

1

muffler part number

Kit Only

Muffler Quantity

2

Muffler Series

Super 44 Series

Muffler Type

Chambered

Pipe Color

Silver

Pipe Material

409 Stainless Steel

Product Type

Exhaust System

Sound Level

Aggressive

Spring Bolt Kit Included

No

Sub Category

Exhaust and Tail Pipes

Tail Pipe Quantity

Dual

Tail Pipe Quantity

2

Tail Pipe Tapered Outlet

No

Type

Cat-Back

Valve Included

No

Valve Type

Not Applicable

Warning

California Proposition 65

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