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Flowmaster 817539 Force II Cat-Back Exhaust System Stainless Steel

(2011-2014 Ford F-150; 1997-2011 Audi A4 Cabriolet)

Part of: Flowmaster Force II Cat-Back Exhaust System Stainless Steel

Other options in this family: Flowmaster 817502 Flowmaster 817344 Flowmaster 817554 Flowmaster 817478

Manufacturer

Picture for manufacturer Flowmaster

Part Number

817539
8 reviews
Sale Price

$1,299.95

4 left at this price

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Usually delivered within 2 days

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Product Details

The Flowmaster Force II Cat-Back Exhaust System delivers enhanced performance and a refined exhaust note for your vehicle. Engineered with Flowmaster's Laminar Flow PRO Series performance muffler technology, this system optimizes exhaust flow while maintaining a moderate to mild exterior sound level—perfect for drivers seeking improved performance without excessive noise.

Key Features:

  • Premium stainless steel construction for maximum durability and corrosion resistance
  • Laminar Flow PRO Series performance muffler for optimized exhaust flow
  • Moderate to mild exterior exhaust tone—aggressive enough to notice, refined enough for daily driving
  • Utilizes factory hanger locations for a direct-fit installation
  • Complete system includes all necessary hangers and hardware
  • Backed by Flowmaster's lifetime limited warranty

This cat-back system is designed for straightforward installation using your vehicle's existing mounting points, making it an ideal upgrade for enthusiasts looking to enhance both performance and sound. The stainless steel construction ensures long-lasting performance in all weather conditions, while the precisely engineered muffler design reduces backpressure and improves exhaust scavenging for measurable power gains.

Products specifications

Fits

2011-2014 Ford F-150; 1997-2011 Audi A4 Cabriolet

Inlet Inside Diameter

2.500 in.

Outlet Outside Diameter

2.500 in.

Tip Diameter

3.000 in.

System Type

Cat 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

Chromium (hexavalent compounds)

California Proposition 65 Chemical Name

Nickel (Metallic)

Exit Position

Dual Rear Same Side

Heat Shield Attached

No

Material

Stainless Steel

Muffler Count

1

Exhaust Type

Single

Tubing Diameter

2.500 in.

Outlet Diameter

2.500 in.

Tip Quantity

2

Tail Pipe Diameter

2.500 in.

Single or Dual

Dual

Title

Flowmaster 817539 Cat-back System 409S - Dual Rear/Side Exit - Force II - Mild/Moderate Sound

Brand

Flowmaster

Catalytic Converter Quantity

0

Category

Exhaust

Clamping Type

Flat Band

Clamps Included

Yes

Drive

2WD

Drive

4WD

Emission Code

5

Exhaust Series

Force II

Exhaust Tip Color

Silver

Exhaust Tip Connection

Clamp-On

Exhaust Tip Cut

Angled

Exhaust Tip Edge

Rolled Edge Angle Cut

Exhaust Tip Finish

Polished

Exhaust Tip Intercooled

No

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 Side

Exit Style

Dual Out Rear

Finish

Natural

Gasket Or Seal Included

No

Grade Type

Performance

Hangers Included

Yes

Heat Shield Included

No

Inlet Diameter

3.00

Inlet Type

Flanged

Mounting Bracket Included

Yes

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 Inlet Connection

Slip-Fit

Muffler Outlet Connection

Slip-Fit

Muffler Outlet Quantity

2

muffler part number

Kit Only

Muffler Quantity

1

Muffler Series

Pro Series

Muffler Type

Absorption

Pipe Color

Silver

Pipe Material

409 Stainless Steel

Product Type

Exhaust System

Sound Level

Moderate/Mild

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

Cat-Back

Valve Included

No

Valve Type

Not Applicable

Warning

California Proposition 65

Best price I could find anywhere and it shipped right away!

Great so far

Awesome price! Shipping could be faster, but it was fast enough. Will deff buy again.

Best prison the Internet and quick order fulfillment. Glad to have found Autoplicity!

Ordered 4 race ramps flatstoppers for winter storage of my Dodge Viper. Product prevents flat spots on auto tires that are stored more than 30 days. Order process was extremely easy, product was promptly shipped. I'll definately do business with Autoplicity in the future.

Very please with first buying experience with Autoplicity! Not only did they have the best price, I promptly received the following e-mail message the next day after I ordered.<br><br>Hello brian willard!, <br>Good news! You order has been shipped. <br>Order Number: 1412<br>Order Details: http://autoplicity.com/orderdetails.aspx?orderid=1412<br>Date Ordered: Wednesday, December 21, 2011<br>Tracking Number: 1Z4XR0770346534081

The best price found on the net for an Airtex fuel pump. Fast shipping via UPS. Received 08/09/2012<br><br>Autoplicity is now in my favorites. Order Number: <br>Ray J.

Shipped out fast. Prices are very competitive. Couldn't ask for more.

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