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KEF Flowmaster 817837 American Thunder Kit P14813567KEF-F13817837 https://cdnimages.opentip.com/full/KEF/KEF-F13817837_2.jpg Flowmaster 817837 American Thunder Kit Manufacturer Part Number: 817837Exhaust System Kit; American Thunder ® Axle Back System; 409S Stainless Steel; Without Muffler; 2-1/2 Inch Pipe Diameter; Single Exhaust With Single Exit; Single Out Rear Exit; 3 Inch Diameter 304 Polished Stainless Steel Tip With FlowmasterAttributes Sound Level: Moderate Type: Axle-Back Exhaust Type: Single Outlet Type: Single Exit Position: Rear Exit Material: Stainless Steel Diameter (IN): 2-1/2 Inch Includes Muffler: No Muffler Brand: No Muffler Includes Exhaust Tip: Yes Exhaust Tip Style: 3 Inch Round Angle-Cut Exhaust Tip Material: Stainless Steel Muffler Quantity: No Muffler Includes Exhaust Pipe Muffler Delete: No Muffler Configuration: No Muffler Includes Hardware: No Required Welding: No Estimated Install Time (Hours): 2 Product Description Flowmasters new American Thunder® axle-back system for the 2018 Jeep Wrangler JL is perfect for the person looking for maximum performance and ground clearance from their exhaust system. This 2.50 Inch system features a 409S stainless steel mandrel bent tailpipe with a 3.00 Inch polished stainless steel tip and fits both 2 and 4 door models with the 3.6 Liter V6 engine. This system replaces the factory transverse muffler providing a moderate to aggressive sound level. This allows for better ground clearance when driving off-road. Because the tailpipe is tucked up so high, an aftermarket metal bumper is recommended.Features & Benefits Stainless Steel Construction Provides Maximum Off Roading Clearance Moderate Sound Level Designed For An Easy Fit Easy Installation Limited Lifetime Warranty This Fits2023-2023 Jeep Wrangler2018-2022 Jeep Wrangler JLPlease Click Here for Installation Instructions.Please Click Here for Installation Instructions.Please Click Here for Installation Instructions. 14813567 700042038084 11.6000lbs 0.00 0.00 0.00
Flowmaster
162.2190 2025-07-16 Only 1 left In Stock
customer review - by , April 4, 2023
5/ 5stars
This was a direct replacement of the stock muffler, which is basically a muffler delete. It was installed in 5 minutes after removing the factory part. I did have to slightly bend open the pipe to get it to fit, along with some PB blast. It slipped right on.It is a high-tuck exhaust so it is not visible from the rear of the car. I do wish Flowmaster offered an option that would allow you to show the nice chrome polished exhaust tip. The sound is about as good as it gets for the 2.0T 4-cylinder engine. Has some grunt and does not drone in 8th gear, which is nice. It is significantly louder at cold startup.
customer review - by , January 1, 2022
5/ 5stars
Well to my surprise the clamp on my Stock Jeep muffler was welded on, but a quick grinder and hammer released it..
customer review - by , February 2, 2021
5/ 5stars
Very easy to install, removing the stock exhaust will take you 10x longer. sound is amazing.

Flowmaster 817837 American Thunder Kit

stars Rating 5 | 3 reviews
Brand Flowmaster
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UPC: 700042038084
SKU: KEF-F13817837
Price: $162.22
Quantity:
Only 1 left In Stock
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Product Description

Manufacturer Part Number: 817837

Exhaust System Kit; American Thunder ® Axle Back System; 409S Stainless Steel; Without Muffler; 2-1/2 Inch Pipe Diameter; Single Exhaust With Single Exit; Single Out Rear Exit; 3 Inch Diameter 304 Polished Stainless Steel Tip With Flowmaster

Attributes

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


Product Description


Flowmasters new American Thunder® axle-back system for the 2018 Jeep Wrangler JL is perfect for the person looking for maximum performance and ground clearance from their exhaust system. This 2.50 Inch system features a 409S stainless steel mandrel bent tailpipe with a 3.00 Inch polished stainless steel tip and fits both 2 and 4 door models with the 3.6 Liter V6 engine. This system replaces the factory transverse muffler providing a moderate to aggressive sound level. This allows for better ground clearance when driving off-road. Because the tailpipe is tucked up so high, an aftermarket metal bumper is recommended.

Features & Benefits

  • Stainless Steel Construction
  • Provides Maximum Off Roading Clearance
  • Moderate Sound Level
  • Designed For An Easy Fit
  • Easy Installation
  • Limited Lifetime Warranty

This Fits

2023-2023 Jeep Wrangler
2018-2022 Jeep Wrangler JL

Please Click Here for Installation Instructions.
Please Click Here for Installation Instructions.
Please Click Here for Installation Instructions.

warning tips WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.

Shipping Restrictions

This product can't be shipped to the following regions: CA.

Note

This product is not eligible for coupon code discount, for we've been offering the best price in the market.
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Customer Reviews
5 out of 5
5 stars
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1 stars
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By Brent
Date: April 24, 2023
This was a direct replacement of the stock muffler, which is basically a muffler delete. It was installed in 5 minutes after removing the factory part. I did have to slightly bend open the pipe to get it to fit, along with some PB blast. It slipped right on.It is a high-tuck exhaust so it is not visible from the rear of the car. I do wish Flowmaster offered an option that would allow you to show the nice chrome polished exhaust tip. The sound is about as good as it gets for the 2.0T 4-cylinder engine. Has some grunt and does not drone in 8th gear, which is nice. It is significantly louder at cold startup.
Rating: 5 stars [5 of 5 Stars!]
By Ed
Date: January 06, 2022
Well to my surprise the clamp on my Stock Jeep muffler was welded on, but a quick grinder and hammer released it..
Rating: 5 stars [5 of 5 Stars!]
By Tana
Date: February 28, 2021
Very easy to install, removing the stock exhaust will take you 10x longer. sound is amazing.
Rating: 5 stars [5 of 5 Stars!]
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