Flowmaster 818121 American Thunder Axle Back Exhaust System
SKU: 73923942249

Flowmaster 818121 American Thunder Axle Back Exhaust System

Sale price$256.50 Regular price$285.00
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

Flowmaster 818121 American Thunder Axle Back Exhaust SystemFlowmaster introduces our new stainless steel cat back and axle back exhaust systems for the 2021 2022 Ford Bronco with the 2. 3 and 2. 7 liter engines. These systems use either a FlowFX, 60 Series, Outlaw Series muffler or a high clearance muffler delete for a deep powerful sound and increased performance. Maximum dyno gains of 19hp and 19 lb ft at the rear wheels (818121 kit). Mandrel bent 409 stainless steel tubing is used for maximum exhaust flow

Flowmaster introduces our new stainless steel cat-back and axle-back exhaust systems for the 2021-2022 Ford Bronco with the 2.3 and 2.7-liter engines. These systems use either a FlowFX, 60 Series, Outlaw Series muffler or a high clearance muffler delete for a deep powerful sound and increased performance. Maximum dyno gains of 19hp and 19 lb-ft at the rear wheels (818121 kit). Mandrel bent 409 stainless steel tubing is used for maximum exhaust flow and durability. 3.00-inch and 4.00-inch black or polished stainless steel tips are used to add a custom look to this iconic vehicle. All of the necessary hardware is included and factory-mounting locations are used for an easy installation. Backed by Flowmaster's Lifetime Limited Warranty.

Exhaust System Kit; American Thunder ® Axle Back System; Stainless Steel; With Muffler; 3 Inch Pipe Diameter; Single Exhaust With Single Exit; Rear Exit; 4-3/4 Inch Round Angle-Cut Polished Stainless Steel Tip

Features & Benefits

  • Features 3 Inch Mandrel Bent 16 Gauge 409 Stainless Steel Tubing Maximizes Exhaust Flow And Improves Durability
  • Features 3 Inch Polished Stainless Steel Tips Add A Custom Look
  • Delta Flow Technology Increases Performance
  • A Tuned 60 Series Performance Muffler Delivers A Deep, Aggressive To Moderate Performance Tone And Improves Exhaust Flow
  • No Drone
  • Features Complete Hardware And Factory Styled Hangers In The Stock Location For An Easy Installation
  • Limited Lifetime Warranty

Attributes

  • Type: Axle-Back
  • Exhaust Type: Single
  • Outlet Type: Single
  • Exit Position: Passenger Side Rear
  • Material: Stainless Steel
  • Includes Muffler: Yes
  • Sound Level: Aggressive/ Moderate
  • Diameter (IN): 3 Inch
  • Includes Exhaust Tip: Yes
  • Exhaust Tip Style: 4-3/4 Inch Round Angle-Cut
  • Exhaust Tip Material: Stainless Steel
  • Muffler Quantity: 1
  • Includes Exhaust Pipe Muffler Delete: No
  • Muffler Configuration: Single Inlet/ Single Outlet
  • Muffler Brand: A Tuned 60
  • Includes Hardware: Yes
  • Required Welding: No
  • Estimated Install Time (Hours): 2
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: 73923942249

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BODE A. FAMORIYO
New York, US
★★★★★ 5
Great walking shoes
Size: 11, Color: All Black
A very comfortable walking shoe that’s well made and looks like it’s going to hold up well for everyday wear. Lightweight indeed and probably doesn’t require much cleaning. Easy to get on and off without much stress though.
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Reviewed in the United States on May 30, 2026
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Matt
Belleville, US
★★★★★ 5
Super comfortable size 12
Size: 12, Color: All Black
The quality is great the style and fit is great they're awesome and super comfortable! First pair of shoes in 30 years that don't hurt my feet I like them a lot! Size 12
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Reviewed in the United States on April 10, 2026
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David
Pawtucket, US
★★★★★ 4
Good quality shoe for a decent price.
Size: 9, Color: Grey
Very decent quality, lightweight shoe. Comfortable and cushioned for all day wear. I would definitely purchase again.
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Reviewed in the United States on May 14, 2026
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Jennifer Peterson
Fort Morgan, US
★★★★★ 5
Great value
Size: 12, Color: All Black
I have 3 pairs of these shoes. They are super comfy. The price is amazing for a shoe so well built. They are light weight look really nice on. Buy them, well worth the money.
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Reviewed in the United States on April 19, 2026
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D. Smith
Massapequa, US
★★★★★ 5
Worth the price
Size: 10, Color: White
Stylish and comfortable
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Reviewed in the United States on May 25, 2026

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