What other parts are required for this exhaust system?

This cat-back exhaust system must be used with Kooks Headers and Y-pipe. It is also designed for LS engine swaps, so you'll need an appropriate LS swap kit, such as the RPM Extreme kit or similar.

What kind of sound can I expect from this exhaust?

This system features a 3-inch oval muffler with a 4" x 9" x 14" body, designed to produce a notable exhaust note that complements the power of an LS engine swap. Kooks systems are dyno and race tested to achieve specific sound and performance characteristics.

Is this exhaust system compatible with all suspension setups?

A minimum 2-1/2 inch suspension lift is recommended for this exhaust system due to the nature of LS engine swaps and custom exhaust routing. Due to the custom installation, other parts may be required for proper fitment.

Kooks Headers

Specifications

Brand: Kooks Headers
Part #: 37104100
UPC: 842422172350

Kooks Headers

Kooks 2007+ Jeep Wrangler JK w/LS Swap 3in Cat Back SS Exhaust (Must Use w/Kooks Headers)

Name: Kooks 2007+ Jeep Wrangler JK w/LS Swap 3in Cat Back SS Exhaust (Must Use w/Kooks Headers)
Brand: Kooks Headers
Price: 677.71 USD
Availability: InStock

$677.71

Fits 2007-2018 Jeep Wrangler JK 4-door. Kooks 3in stainless steel cat-back exhaust for LS swaps, designed for maximum power when used with Kooks headers.

Key Features

Fits 2007-2018 Jeep Wrangler JK 4-Door with LS engine swap.
3-inch diameter, mandrel-bent T304 stainless steel tubing for improved exhaust flow.
Includes a 3-inch oval muffler with a 4" x 9" x 14" body for a distinct sound.
Must be used in conjunction with Kooks Headers and Y-pipe for proper fitment.
Designed to work with LS engine swaps using RPM Extreme or similar swap kits.
Constructed from T304 aircraft-quality stainless steel for durability and corrosion resistance.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Fits these vehicles

Jeep Wrangler 2007-2017
Jeep Wrangler JK 2018

Product Details

This is the Kooks 3-inch stainless steel cat-back exhaust system specifically made for the 2007-2018 Jeep Wrangler JK 4-door when you're installing an LS engine swap. It's designed to work hand-in-hand with Kooks headers and Y-pipe, so you'll need those parts too for this system to fit and function correctly. This setup is all about maximizing the power potential of your LS-swapped JK, giving it a strong exhaust note to match its new heart.

Crafted from T304 aircraft-quality stainless steel, this cat-back is built to handle the demands of an off-road vehicle and resist corrosion. The tubing is mandrel-bent to maintain consistent diameter throughout, which helps with exhaust flow. It includes a 3-inch oval muffler with a 4-inch by 9-inch by 14-inch body, tuned to provide a notable sound without being overly aggressive. Kooks has been in the performance exhaust game for over 50 years, and every system they make is dyno and race tested to ensure it performs as expected.

Because this is a custom exhaust for an engine swap, it's recommended to have at least a 2-1/2 inch suspension lift on your Wrangler JK. Keep in mind that due to the custom nature of LS swaps, other parts might be needed for perfect fitment. It's always a good idea to contact Kooks Headers and Exhaust before ordering to confirm all your needs.