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Flowmaster 817588 American Thunder Axle-Back Exhaust System with Super Mufflers - 44

(2011-2014 Ford Mustang)

Part of: Flowmaster American Thunder Axle-Back Exhaust System with Super Mufflers

Other options in this family: Flowmaster 817744

Manufacturer

Picture for manufacturer Flowmaster

Part Number

817588
16 reviews
Sale Price

$779.95

2 left at this price

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Usually delivered within 2 days

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Product Details

The Flowmaster American Thunder Axle-Back Exhaust System delivers an aggressive exhaust note and performance gains through precision-engineered design. This cat-back replacement system features Flowmaster's legendary Super 44 series mufflers, known for their deep, powerful sound and minimal interior resonance.

Key Features:

  • Super 44 performance mufflers for aggressive exhaust tone
  • 3.00-inch mandrel-bent stainless steel tubing for maximum exhaust flow
  • 4.00-inch polished stainless steel tips for premium appearance
  • Dyno-tuned design optimizes horsepower and torque output
  • Utilizes factory hanger locations for direct bolt-on installation
  • Premium 16-gauge stainless steel construction resists corrosion
  • Includes all necessary hardware for installation

This axle-back system installs behind the rear axle using existing mounting points, making it a straightforward upgrade that typically requires no cutting or welding. Backed by Flowmaster's lifetime limited warranty, this exhaust system combines performance engineering with long-lasting durability.

Products specifications

Fits

2011-2014 Ford Mustang

Outlet Diameter

3.000 in.

Inlet Inside Diameter

3.000 in.

Outlet Outside Diameter

4.000 in.

System Type

Axle Back

Prop 65

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

California Proposition 65 Chemical Name 2

Chromium (hexavalent compounds)

California Proposition 65 Chemical Name 1

Nickel (metallic)

California Proposition 65 Chemical Name

Nickel (Metallic)

California Proposition 65 Chemical Name

Chromium (hexavalent compounds)

Heat Shield Attached

No

Material

Stainless Steel

Tip Diameter

4.000 in.

Tubing Diameter

3.000 in.

Muffler Count

2

Exit Position

Dual Rear

Tip Quantity

2

Tail Pipe Diameter

3.000 in.

Exhaust Type

Dual

Single or Dual

Dual

Title

Flowmaster 817588 Axle-back System 409S - Dual Rear Exit - American Thunder - Aggressive Sound

Brand

Flowmaster

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 Connection

Welded

Exhaust Tip Cut

Angled

Exhaust Tip Edge

Rolled 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

Single Wall

Exit Style

Dual Out Rear

Finish

Natural

Gasket Or Seal Included

No

Grade Type

Performance

Hangers Included

Yes

Heat Shield Included

No

Inlet Diameter

2.75

Inlet Type

Clamp-On

Mounting Bracket Included

No

Muffler (Left) Body Width

9.50

Muffler (Left) Type

Chambered

Muffler (Right) Type

Chambered

Muffler Body Material

409 Stainless Steel

Muffler Body Shape

Oval

Muffler Finish

Black High-Temperature Paint Finish

Muffler Flanged Inlet

No

Muffler Flanged Outlet

No

Muffler Outlet Quantity

1

muffler part number

Kit Only

Muffler Quantity

2

Muffler Series

Super 44 Series

Muffler Type

Chambered

Pipe Color

Black

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

2

Tail Pipe Quantity

Dual

Tail Pipe Tapered Outlet

No

Type

Axle-Back

Valve Included

No

Valve Type

Not Applicable

Warning

California Proposition 65

Best prices around so far

Quick and Easy!

Nice easy to find the parts I need

I just got it. Not sure about the rest. Thank you

Overall good product and fast delivery.

Quick and easy

Great prices, fast shipping and kept me informed with several status e-mails. What more could you want.

quick and easy

I needed these, glad you had them on sale

very smooth and efficient web site.

Great Prices! and Great Customer Service thanks again!

quick & easy!

easy checkout

I wish you did not have to scroll all the way to the bottem each time to review the products. Other than that it was easy and great.

Good

best prices around by far for the exact same product! Would definetely recomend autoplicity to a friend

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