SKU: 55764540027

2011-2012 Ford Mustang Axle-Back Exhaust Flowmaster Stainless Steel

Sale price$321.73 Regular price$357.48
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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

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Description

2011-2012 Ford Mustang Axle-Back Exhaust Flowmaster Stainless SteelOverview: This Outlaw axle back exhaust system is specifically designed for 2011 2012 Ford Mustang GT with the 5. 0L engine and replaces the original rear mounted mufflers with factory style connections. With easy fit in mind, these 3. 00 inch mandrel bent exhaust systems include a pair of our race proven Outlaw mufflers for an aggressive exterior and interior sound, and with the maximum amount of power gain possible from an axle back system. The

Overview:

This Outlaw® axle-back exhaust system is specifically designed for 2011-2012 Ford Mustang GT with the 5.0L engine and replaces the original rear mounted mufflers with factory style connections. With easy fit in mind, these 3.00-inch mandrel-bent exhaust systems include a pair of our race-proven Outlaw mufflers for an aggressive exterior and interior sound, and with the maximum amount of power gain possible from an axle-back system. The hangers use the factory locations and the system is finished off with a pair of 4.00-inch polished stainless steel tips embossed with the Flowmaster® name. Designed for an quick and easy installation, these systems include all necessary parts, hardware, detailed instructions and are covered by our Lifetime Limited Warranty. Notes: Also fits 2012 Ford Mustang Boss 302 models.

Features:

  • Flow FX Series performance muffler offers an aggressive to moderate sound level and increased performance
  • 409 stainless steel construction delivers extra durability and improved long-term corrosion resistance
  • Max dyno gains of 9 hp and 10 lb-ft at the rear wheels
  • 3.00-inch 16-gauge mandrel bent stainless steel tubing helps maintain maximum exhaust flow for better power
  • Includes all necessary hardware for an at home installation
  • Dual 4.00-inch black ceramic-coated tips add a custom look
  • Uses factory hanger locations for easy installation
  • Lifetime Limited Warranty
  • Specs:

  • Brand: Flowmaster
  • CARB (California) Compliant: Yes
  • Catalytic Converter Included: No
  • Catalytic Converter Quantity: 0
  • Clamping Type: Flat Band
  • Clamps Included: Yes
  • Emission Code: 5
  • Exhaust Series: Outlaw
  • 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 Material: 304 Stainless Steel
  • Exhaust Tip Quantity: 2
  • 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
  • Main Piping Diameter: 3
  • Mounting Bracket Included: No
  • Muffler (Left) Body Height: 4
  • Muffler (Left) Body Length: 10.5
  • Muffler (Left) Body Width: 4
  • Muffler (Left) Type: Chambered
  • Muffler (Right) Body Height: 4
  • Muffler (Right) Body Length: 10.5
  • Muffler (Right) Body Width: 4
  • Muffler (Right) Type: Chambered
  • Muffler Body Diameter: 4
  • Muffler Body Height: 4
  • Muffler Body Length: 16.75
  • Muffler Body Material: 409 Stainless Steel
  • Muffler Body Shape: Round
  • Muffler Body Width: 4
  • Muffler Finish: Black High-Temperature Paint Finish
  • Muffler Flanged Inlet: No
  • Muffler Flanged Outlet: No
  • Muffler Included: Yes
  • Muffler Inlet Connection: Slip-Fit
  • Muffler Inlet Inside Diameter: 2.75
  • Muffler Inlet Outside Diameter: 3
  • Muffler Outlet Quantity: 1
  • Muffler Part Number: Kit Only
  • Muffler Quantity: 2
  • Muffler Series: Outlaw
  • Muffler Type: Chambered
  • Pipe Color: Black
  • Pipe Material: 409 Stainless Steel
  • Sound Level: Aggressive
  • Spring Bolt Kit Included: No
  • Tail Pipe Outlet Outside Diameter: 3
  • Tail Pipe Quantity: 2
  • Tail Pipe Tapered Outlet: No
  • Type: Axle-back
  • Valve Included: No
  • Valve Type: Not Applicable
  • Part Number: 817516
  • Applications:

    • 2011-2012 Ford Mustang 302 CID

    Emissions:

    • This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.
    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 55764540027

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    4.8 ★★★★★
    Based on 22 reviews
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    G
    Verified Purchase
    George
    Houston, US
    ★★★★★ 5
    This is very hard to find item.
    Size: 1 Quart, Style: 6-Pack, Configuration: Euro LX 0W-30
    This is one of the lowest VOC oils. Important if your vehicle is GDI. Should help keep valves cleaner.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on July 27, 2025
    B
    Verified Purchase
    Bill
    Belleville, US
    ★★★★★ 5
    Went with a 30 weight because of ambient temperatures
    Size: 1 Quart, Style: 6-Pack, Configuration: Euro LX 0W-30
    Running this in my wife's 2016 Subaru Crosstrek. We live in Arizona and 100+ temps is normal thing. Did a lot of research on this before I decided on running a 30 weight, technically a 40 weight is recommended for our temperature. I noticed that her car was rattling on startup and was worse when it was a hot start. After switching to a 0w-30 I noticed the noise was substantially less. Fuel mileage was not changed she's still averaging 32mpg with her manual transmission vehicle. I've done my research and yes I know about staying with the factory recommended weight but we don't see subzero temperature and we are definitely not seeing the the average 80f summers. 40Fwinters and 105F summers are the norm here. Yes ambient temps effect oil decisions. I also prefer Euro Spec oils over SAE because of Europes extended drain intervals of 10-12k miles. I change every 5k or 6 months.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on September 17, 2023
    J
    Verified Purchase
    Jose Rodriguez
    Grantham, US
    ★★★★★ 5
    Filtro de aire
    Style: CA10467
    Excelente producto , perfect size for honda accord 2010 2.4
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 22, 2026
    D
    Verified Purchase
    diego
    Boise, US
    ★★★★★ 5
    muy bueno
    Style: CA10467
    very good
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 4, 2026
    B
    Verified Purchase
    Bill.H
    Grantham, US
    ★★★★★ 5
    Fits perfect in my 09 Accord 4-cyl
    Style: CA10467
    Super easy to install, good quality, fits correctly. What more could you ask? A performance gain, you may ask. Ha. This is a gutless 2.4L 4-banger. No performance to begin with, and no gain after installing this. :-)
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on February 17, 2026

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