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Flowmaster American Thunder Axle-Back Exhaust System

Part # 818121

Fits 2021-2026 Ford Bronco 2.3L/2.7L, American Thunder Axle-Back, Single Exit

Exhaust Series

Exit Style

Type

Flowmaster American Thunder Axle-Back Exhaust System

In Stock
Free Shipping - Lower 48 US States
Advertised Price $535.95
$481.95
Save $54.00
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Delta Flow
5

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.

See Emissions Details
Looking for the perfect balance between a mild tone while cruising and at idle, but aggressive tone under throttle all while having no drone? The American Thunder axle-back exhaust system is perfect for the daily driven 2021-2026 Ford Bronco with the 2.3 or 2.7-liter engine. This system uses a tuned 60 Series style muffler for an aggressive to moderate exhaust tone and increased performance. Maximum dyno gains of 19 hp and 19 lb-ft. were measured at the rear wheels. 3.00-inch mandrel bent 409 stainless steel tubing is used to maximize exhaust flow and durability. A polished 3.00-inch stainless steel tip is 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.

Features:

  • 3.00-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
  • A 3.00-inch polished stainless steel tips add a custom look
  • No Drone
  • Includes complete hardware and factory styled hangers in the stock locations for an easy installation
  • Delta Flow Technology Increases Performance and Reduces Drone
  • Delta Flow Technology Increases Performance
  • Backed by Flowmaster's Lifetime Limited Warranty

About Flowmaster

Shop the complete line of Flowmaster products for exhaust systems, mufflers, and more that deliver the iconic Flowmaster sound. Available at Holley.com!

Brand Flowmaster
California Proposition 65Yes
CARB (California) CompliantYes
Catalytic Converter IncludedNo
Catalytic Converter Quantity0
CategoryExhaust
Clamping TypeFlat Band
Clamps IncludedYes
Emission Code5
Exhaust SeriesAmerican Thunder
Exhaust Tip ColorSilver
Exhaust Tip ConnectionWelded
Exhaust Tip CutAngled
Exhaust Tip Diameter3.00 IN
Exhaust Tip EdgeSlash Cut
Exhaust Tip FinishPolished
Exhaust Tip IntercooledNo
Exhaust Tip Length4.75 IN
Exhaust Tip Material304 Stainless Steel
Exhaust Tip Quantity1
Exhaust Tip ResonatedNo
Exhaust Tip ShapeRound
Exhaust Tip WallSingle Wall
Exit StyleSingle Out Rear - 2 and 4-Door
FinishPainted
Gasket Or Seal IncludedNo
Grade TypePerformance
Hangers IncludedYes
Inlet TypeClamp-On
Main Piping Diameter3.00 IN
Mount TypeUses New Hangers (Included)
Mounting Bracket IncludedYes
Muffler Body Height5.00 IN
Muffler Body Length13.50 IN
Muffler Body Material409 Stainless Steel
Muffler Body ShapeOval
Muffler Body Width10.00 IN
Muffler ColorBlack
Muffler FinishBlack High-Temperature Paint Finish
Muffler Flanged InletNo
Muffler Flanged OutletNo
Muffler IncludedYes
Muffler Inlet ConnectionSlip-Fit
Muffler Inlet Inside Diameter3.00 IN
Muffler Inlet LocationCenter
Muffler Inlet Outside Diameter3.13 IN
Muffler Outlet Diameter3.00 IN
Muffler Outlet LocationOffset
Muffler Outlet Quantity1
Muffler Overall Length34.00 IN
Muffler Part NumberKit Only
Muffler Quantity1
Muffler Series60 Series
Muffler TypeReflection
Part TypeExhaust System
Pipe ColorSilver
Pipe Material409 Stainless Steel
Product TypeExhaust System
Sound LevelAggressive / Moderate
Spring Bolt Kit IncludedNo
Sub CategoryExhaust and Tail Pipes
Tail Pipe Outlet Outside Diameter3.00 IN
Tail Pipe Quantity1
Single
Tail Pipe Tapered OutletNo
Tip LogoEmbossed
TypeAxle-Back
Valve IncludedNo
Valve TypeNot Applicable
UPC090127140284
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
Part Number818121
5

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.
2021-2026 Ford Bronco with 2.3L and 2.7L Ecoboost engines. Fits 2 & 4-wheel drive, 2 & 4 Door Models.

*Free Shipping and Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

Some parts are not legal for use in California or other states with similar regulations.

Flowmaster American Thunder Axle-Back Exhaust System
Flowmaster American Thunder Axle-Back Exhaust System
Advertised Price $535.95
$481.95
Save $54.00