2021-2026 Ford F Cat-Back Exhaust Flowmaster Stainless Steel
SKU: 75869715721

2021-2026 Ford F Cat-Back Exhaust Flowmaster Stainless Steel

Sale price$472.48 Regular price$524.98
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

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Description

2021-2026 Ford F Cat-Back Exhaust Flowmaster Stainless SteelOverview: Flowmaster introduces our new American Thunder stainless steel cat back exhaust system for the 2021 2026 Ford F 150 with the 2. 7L, 3. 5L and 5. 0L engines. This system uses a Super 40 series muffler for a deep powerful sound and increased performance. Maximum dyno gains of 11 HP and 10 LB. FT. at the rear wheels. Mandrel bent 409 stainless steel tubing is used for maximum exhaust flow and durability. The system has a 3. 0 inch inlet pipe

Overview:

Flowmaster introduces our new American Thunder stainless steel cat-back exhaust system for the 2021-2026 Ford F-150 with the 2.7L, 3.5L and 5.0L engines. This system uses a Super 40 series muffler for a deep powerful sound and increased performance. Maximum dyno gains of 11 HP and 10 LB.FT. at the rear wheels. Mandrel bent 409 stainless steel tubing is used for maximum exhaust flow and durability. The system has a 3.0-inch inlet pipe and dual 2.5-inch tailpipes with both side exit and rear exit options that allow you to customize the look of the kit. 3.5-inch polished stainless steel tips finish off the kit for a classic performance look. All of the necessary hardware is included and factory-mounting locations are used for an easy installation. Backed by Flowmaster's Lifetime Limited Warranty.

Features:

  • Max increases of up to 9 hp and 12 lb-ft over the stock exhaust at the rear wheels
  • Single 3.50-inch to dual 2.50-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
  • 4.50-inch black ceramic coated tips add a custom look to the truck
  • Includes complete hardware and factory styled hangers in the stock locations for an easy installation
  • Flow FX “straight through” performance muffler delivers a deep, moderate performance tone and improves exhaust flow
  • 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: American Thunder
  • Exhaust Tip Color: Silver
  • Exhaust Tip Connection: Clamp-On
  • Exhaust Tip Cut: Angled
  • Exhaust Tip 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 Side
  • Finish: Natural
  • Gasket Or Seal Included: No
  • Grade Type: Performance
  • Hangers Included: Yes
  • Inlet Type: Clamp-On
  • Main Piping Diameter: 2.5
  • Mount Type: Uses Factory Hangers
  • Mounting Bracket Included: Yes
  • Muffler Body Height: 5
  • Muffler Body Length: 10.25
  • Muffler Body Material: 409 Stainless Steel
  • Muffler Body Shape: Oval
  • Muffler Body Width: 10
  • Muffler Color: Black
  • 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: 3
  • Muffler Inlet Location: Center
  • Muffler Inlet Outside Diameter: 3.13
  • Muffler Outlet Connection: Slip-Fit
  • Muffler Outlet Diameter: 2.5
  • Muffler Outlet Location: Dual
  • Muffler Outlet Quantity: 1
  • Muffler Overall Length: 16.5
  • Muffler Part Number: Kit Only
  • Muffler Quantity: 1
  • Muffler Series: Super 40 Series
  • Muffler Type: Chambered
  • Pipe Color: Silver
  • Pipe Material: 409 Stainless Steel
  • Sound Level: Aggressive / Moderate
  • Spring Bolt Kit Included: No
  • Tail Pipe Outlet Outside Diameter: 2.5
  • Tail Pipe Quantity: 2
  • Tail Pipe Tapered Outlet: No
  • Tip Logo: Embossed
  • Type: Cat-Back
  • Valve Included: No
  • Valve Type: Not Applicable
  • Part Number: 817979
  • Applications:

    • 2021-2026 Ford F-150 164 CID
    • 2021-2026 Ford F-150 213 CID
    • 2021-2026 Ford F-150 307 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: 75869715721

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    Tessy
    Phoenix, US
    ★★★★★ 1
    Burned my already sensitive feet, too big
    Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
    Feels icky, and the heat gets trapped and literally felt like my feet were being burned by these. The bottoms of these feel prickly and they are way too big. You have to sit still and cannot walk in them.
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    Reviewed in the United States on April 22, 2026
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    Ms. Mac
    Dallas, US
    ★★★★★ 5
    Just as good as paraffin wax
    Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
    I might prefer these socks over paraffin wax. They are comfy and very moisturizing. I use these socks once a week to keep the heels and soles of my feet moisturized between pedicures. I rinse with warm, soapy water then hang to dry. They are hard to walk in, but there's a saying printed in the socks that's says something to the effect of "take a break, stay off your feet" lol I love that as a reminder to put my feet up and relax
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 9, 2026
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    SKI
    Lake Worth, US
    ★★★★★ 5
    Love these!
    Color: Pink & Beige, Size: Small(fits up to size 7)
    Love these! As I write this review, I’m sitting in my recliner with these on. I have had other silicone socks in the past and would like to share a few of the things that I have learned. These fit great! The others were 2-3 sizes too big because you could not order a size. I wear a size 7 women’s shoe. I got the smaller size. I walked around my apartment in my old ones and they got kinda yucky. Now, I sit in my recliner, put them on and chill for a few hours. I now take them off and put in a ziplock bag so they stay nice and clean (no cat hair!). I use them once a week usually on Saturday or Sunday as I’m a working girl. Also, I use Auqaphor before I put them on and put cotton socks on after I’m finished. Your feet will be SO soft. This is not a one and done…I do this every week especially during sandal season! I know this was lengthy and I hope you got some tips.
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    Reviewed in the United States on April 25, 2026
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    katie b loves books
    Los Angeles, US
    ★★★★★ 5
    These socks are wonderful!
    I was wanting toeless socks to wear at night when I sleep. I put moisturizer on my feet before I go to sleep and wanted socks to hold in the moisturizer. But, I cannot stand having a sock that covers my whole foot. So, I thought, gee, I wonder if they make socks that do not have toes? Well, I found some that have a gel pad, got those, and hated them. They felt awful and I couldn't sleep with them on. Finally, though, I came across these socks -- no gel pad, no toes. They are wonderful. They have enough hold to stay on my feet all night, but are very comfortable. In fact, when I get them on my feet, I forget they are even there. They are soft and well-made and have really cute colors/patterns. I understand that they are probably for exercise/yoga/pilates classes, but I find them perfect for my needs. I love them!
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    Reviewed in the United States on April 2, 2024
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    Michelle mcGuire
    Phoenix, US
    ★★★★★ 5
    GENIUS IDEA !❤
    I'm a nurse and on my feet for 10 hours a day. I wear nursing clogs but really don't like to wear socks. I feel like they smother my feet. These allowed me to wear socks but have my toes free and it feels wonderful!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on August 28, 2021

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