Flowmaster

Flowmaster 818121 American Thunder Axle-Back Exhaust System

$549.95 USD

⬡Mechanic Division pricing available

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Description & Features

Flowmaster 818121 American Thunder Axle-Back Exhaust System

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.

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

Specifications

Brand	Flowmaster
California Proposition 65	Yes
California Proposition 65 Chemical Name	Chromium (hexavalent compounds)
CARB (California) Compliant	Yes
Catalytic Converter Included	No
Catalytic Converter Quantity	0
Category	Exhaust
Clamping Type	Flat Band
Clamps Included	Yes
Emission Code	5
Exhaust Series	American Thunder
Exhaust Tip Color	Silver
Exhaust Tip Connection	Welded
Exhaust Tip Cut	Angled
Exhaust Tip Diameter	3.00
Exhaust Tip Edge	Slash Cut
Exhaust Tip Finish	Polished
Exhaust Tip Intercooled	No
Exhaust Tip Length	4.75
Exhaust Tip Material	304 Stainless Steel
Exhaust Tip Quantity	1
Exhaust Tip Resonated	No
Exhaust Tip Shape	Round
Exhaust Tip Wall	Single Wall
Exit Style	Single Out Rear - 2 and 4-Door
Finish	Painted
Gasket Or Seal Included	No
Grade Type	Performance
Hangers Included	Yes
Inlet Type	Clamp-On
Main Piping Diameter	3.00
Mount Type	Uses New Hangers (Included)
Mounting Bracket Included	Yes
Muffler Body Height	5.00
Muffler Body Length	13.50
Muffler Body Material	409 Stainless Steel
Muffler Body Shape	Oval
Muffler Body Width	10.00
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	3.00
Muffler Inlet Location	Center
Muffler Inlet Outside Diameter	3.13
Muffler Outlet Diameter	3.00
Muffler Outlet Location	Offset
Muffler Outlet Quantity	1
Muffler Overall Length	34.00
Muffler Part Number	Kit Only
Muffler Quantity	1
Muffler Series	60 Series
Muffler Type	Reflection
part type	Exhaust System
Pipe Color	Silver
Pipe Material	409 Stainless Steel
Product Type	Exhaust System
Sound Level	Aggressive / Moderate
Spring Bolt Kit Included	No
Sub Category	Exhaust and Tail Pipes
Tail Pipe Outlet Outside Diameter	3.00
Tail Pipe Quantity	Single
Tail Pipe Tapered Outlet	No
Tip Logo	Embossed
Type	Axle-back
Valve Included	No
Valve Type	Not Applicable
Warning	California Proposition 65

Packaging Information

Weight: 26.85 lbs
Dimensions: 41 x 21.5 x 11.5 IN

Safety

⚠ WARNING: This product can expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information visit www.P65Warnings.ca.gov

Warranty

View Warranty (PDF)

Installation Instructions

View Installation Instructions (PDF)

⚠ Fitment Notes