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Flowmaster 817942 American Thunder Axle-Back Exhaust System

(2007-2018 Jeep Wrangler; 2018 Jeep Wrangler JK)

Part of: Flowmaster American Thunder Axle-Back Exhaust System

Other options in this family: Flowmaster 818162 Flowmaster 817746 Flowmaster 817460 Flowmaster 17421 Flowmaster 817743

Manufacturer

Picture for manufacturer Flowmaster

Part Number

817942
8 reviews
Sale Price

$199.95

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Flowmaster 817942 American Thunder Axle-Back Exhaust System delivers enhanced performance and an aggressive exhaust note for enthusiasts seeking a noticeable upgrade over stock. This bolt-on system features Flowmaster's signature sound technology engineered to produce a moderate, deep tone that turns heads without overwhelming the cabin during highway cruising.

Performance Benefits:

  • Delivers maximum dyno-tested gains of 5 horsepower and 7 lb-ft of torque
  • Mandrel-bent stainless steel tubing maintains consistent pipe diameter for optimized exhaust flow
  • Reduced backpressure improves throttle response and engine efficiency

Construction and Design:

  • Premium 409 stainless steel construction provides excellent corrosion resistance for long-lasting durability
  • Engineered for maximum ground clearance, ideal for off-road applications
  • Utilizes factory mounting points and hangers for straightforward, bolt-on installation
  • Precision-manufactured for accurate fit and proper alignment

This axle-back system replaces only the exhaust components behind the rear axle, making it one of the most cost-effective and easiest exhaust upgrades available. Backed by Flowmaster's Limited Lifetime Warranty, the American Thunder series represents decades of exhaust engineering expertise.

Products specifications

Fits

2007-2018 Jeep Wrangler; 2018 Jeep Wrangler JK

Brand

Flowmaster

Prop 65

Yes

California Proposition 65 Chemical Name

Nickel (Metallic)

California Proposition 65 Chemical Name

Chromium (hexavalent compounds)

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 Edge

Angle 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

Finish

Natural

Gasket Or Seal Included

No

Grade Type

Performance

Hangers Included

Yes

Inlet Type

Clamp-On

Mount Type

Uses Factory Hangers

Mounting Bracket Included

No

Muffler Quantity

0

Muffler Series

Not Included

Muffler Type

None

Pipe Color

Silver

Pipe Material

409 Stainless Steel

Product Type

Exhaust System

Sound Level

Moderate

Spring Bolt Kit Included

No

Sub Category

Exhaust and Tail Pipes

Tail Pipe Quantity

1

Tail Pipe Quantity

Single

Tail Pipe Tapered Outlet

No

Tip Logo

Embossed

Tip Style

Single wall

Type

Axle-Back

Valve Included

No

Valve Type

Not Applicable

Warning

California Proposition 65

Smooth transaction.

Fast and easy.

Good quality, fast shipping.

Easy to make a order

good price, fast shipping, no issues to think of. Thanks

Very smooth

Great and easy process

We shall see

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