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Kooks Headers & Exhaust | ISO Certified

Mission Statement: Superior Engineering with performance excellence.

Kooks Headers & Exhaust Vision: To lead the Exhaust Industry with Innovation and Craftsmanship while providing superior service.

A Word from the Owner, George Kook, Jr.:  “Our goal is to strive for excellence and manufacture the highest quality performing products in the industry with the latest technology and materials available. In the end, we deliver not just a bunch of tubes welded together, nor an exhaust with a muffler and a shiny tip. We deliver a designed, engineered and manufactured component of over sixty years of dedication and passion into the craftsmanship of what we do, and remember why every Kooks Headers & Exhaust product manufactured is not just a set of headers.”

 

Kooks Headers & Exhaust manufacture high performance & high quality headers, connection pipes, axle backs and more right here in the USA. We have installed Kooks on multiple Lethal Performance vehicles, including our 800+rwhp 2024 Mustang GT.

 



Kooks headers & connection pipes are available with their GREEN and High Output GREEN catalytic converters. What's the difference between rtheir featured GREEN cats? 



3" Kooks GREEN High Flow Catalytic Converter:

  • Certified to EPA Standards
  • 3" I.D. Inlet and Outlet
  • 4" Long 4" O.D Body
  • 7" Overall Length
  • 400 CPSI High Flow Substrate
  • Helps reduce harmful emissions in exhaust
  • Certified to EPA Standards Catalytic Converter
  • Elimination of check engine light not guaranteed
  • Ok for use with Forced Induction
  • RATED FOR 375 HORSEPOWER PER CAT - 750 HORSEPOWER PER PAIR

 

3" Kooks High Output GREEN High Flow Catalytic Converter:

  • Certified to EPA Standards
  • 3" I.D. Inlet and Outlet
  • 4" Long 4-1/2" O.D Body
  • 7" Overall Length
  • 300 CPSI High Flow Substrate
  • Helps reduce harmful emissions in exhaust
  • Certified to EPA Standards Catalytic Converter
  • Elimination of check engine light not guaranteed
  • Ok for use with Forced Induction
  • RATED FOR UP TO 500 HORSEPOWER PER CAT - 1000 HORSEPOWER PER PAIR

 

 

Not only do they provide excellent craftmanship and fitment, but they are also ISO Certified (ISO 9001:2015 Certified by NQA), ensuring the highest standards of quality and performance. Whether you're shopping for a new Mustang GT, a Dodge Challenger or an F-150, they have a stainless steel exhaust setup for you. 

 

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  1. Kooks 1-3/4" SS Headers & GREEN Catted Connection Kit (2015-2024 Mustang GT 5.0L) - 1151H232
    $3,030.28

    1 3/4" x 3" Stainless Steel Long Tube Headers
    Includes Stainless Steel GREEN Catted Connection Pipes for OEM Cat Back Connection
    Includes Kooks 49 State EPA Legal Ultra High Performance Green Cats
    All O2 Bungs And Emissions Components Installed
    All Hardware Required For Install Is Included
    These products are not legal for sale, installation, or use on licensed vehicle in the state of California. And they do NOT meet CARB complianceLearn More
  2. Kooks 2" SS Headers & H.O. GREEN Catted & Competition Connection Street / Strip Kit (2015-2024 Mustang GT 5.0L / 2024+ Dark Horse) - 1151H6SS
    $3,618.56

    Kook’s Headers and Exhaust just released their ALL NEW 1-7/8" Stainless Steel Headers and GREEN Catted Connection Pipes for the 2024 Ford Mustang GT is here! With an all new design made specific for the 2024 model year, these headers are the industry’s first for the 2024. With some of the highest quality exhaust products on the market today, Kooks’ Long Tube Header kit is sure to be the perfect fit for your 2024 Mustang GT.

    These Kits Include:
    1 7/8" x 3" Stainless Steel Long Tube Headers
    Stainless Steel GREEN Catted Connection Pipes for OEM Cat Back Connection
    Kooks 49 State EPA Legal Ultra High Performance Green Cats
    All O2 Bungs And Emissions Components Installed
    All Hardware Required For Install Is Included

    These products are not legal for sale, installation, or use on licensed vehicle in the state of California. And they do NOT meet CARB complianceLearn More
  3. Lethal Performance by Kooks 1-7/8 Headers & Competition Only Connection Kit (2015-2024 Mustang GT 5.0L) - 1151H412-LP
    $1,699.99

    1 7/8" x 3" Stainless Steel Long Tube Headers
    Includes Stainless Steel Off Road Connection Pipes for OEM Cat Back Connection
    All O2 Bungs And Emissions Components Installed
    All Hardware Required For Install Is Included
    These products are not legal for sale, installation, or use on licensed vehicle in the state of California. And they do NOT meet CARB complianceLearn More
  4. Kooks 2" SS Headers & H.O. GREEN Catted Connection Kit (2015-2024 Mustang GT 5.0L / 2024+ Dark Horse) - 1151H642
    $3,651.42

    Kook’s Headers and Exhaust just released their ALL NEW 1-7/8" Stainless Steel Headers and GREEN Catted Connection Pipes for the 2024 Ford Mustang GT is here! With an all new design made specific for the 2024 model year, these headers are the industry’s first for the 2024. With some of the highest quality exhaust products on the market today, Kooks’ Long Tube Header kit is sure to be the perfect fit for your 2024 Mustang GT.

    These Kits Include:
    1 7/8" x 3" Stainless Steel Long Tube Headers
    Stainless Steel GREEN Catted Connection Pipes for OEM Cat Back Connection
    Kooks 49 State EPA Legal Ultra High Performance Green Cats
    All O2 Bungs And Emissions Components Installed
    All Hardware Required For Install Is Included

    These products are not legal for sale, installation, or use on licensed vehicle in the state of California. And they do NOT meet CARB complianceLearn More
  5. Kooks 2" SS Headers & GREEN Catted Connection Kit (2015-2024 Mustang GT 5.0L / 2024+ Dark Horse) - 1151H632
    $3,507.13

    Kook’s Headers and Exhaust just released their ALL NEW 1-7/8" Stainless Steel Headers and GREEN Catted Connection Pipes for the 2024 Ford Mustang GT is here! With an all new design made specific for the 2024 model year, these headers are the industry’s first for the 2024. With some of the highest quality exhaust products on the market today, Kooks’ Long Tube Header kit is sure to be the perfect fit for your 2024 Mustang GT.

    These Kits Include:
    1 7/8" x 3" Stainless Steel Long Tube Headers
    Stainless Steel GREEN Catted Connection Pipes for OEM Cat Back Connection
    Kooks 49 State EPA Legal Ultra High Performance Green Cats
    All O2 Bungs And Emissions Components Installed
    All Hardware Required For Install Is Included

    These products are not legal for sale, installation, or use on licensed vehicle in the state of California. And they do NOT meet CARB complianceLearn More
  6. Kooks 1-7/8" SS Headers & H.O. GREEN Catted Connection Kit (2024+ Mustang GT 5.0L / Dark Horse) - 1151H442
    $3,943.66

    Kook’s Headers and Exhaust just released their ALL NEW 1-7/8" Stainless Steel Headers and GREEN Catted Connection Pipes for the 2024 Ford Mustang GT is here! With an all new design made specific for the 2024 model year, these headers are the industry’s first for the 2024. With some of the highest quality exhaust products on the market today, Kooks’ Long Tube Header kit is sure to be the perfect fit for your 2024 Mustang GT.

    These Kits Include:
    1 7/8" x 3" Stainless Steel Long Tube Headers
    Stainless Steel GREEN Catted Connection Pipes for OEM Cat Back Connection
    Kooks 49 State EPA Legal Ultra High Performance Green Cats
    All O2 Bungs And Emissions Components Installed
    All Hardware Required For Install Is Included

    These products are not legal for sale, installation, or use on licensed vehicle in the state of California. And they do NOT meet CARB complianceLearn More
  7. Kooks 1-7/8" Header and GREEN Catted Y-Pipe Kit (2021-2023 F-150) - 1371H430
    $3,599.50

    Kooks 1-7/8" Header and GREEN Catted Y-Pipe Kit (2021-2023 F-150) - 1371H430Learn More
  8. Kooks 1-3/4" Header and GREEN Catted Y-Pipe Kit (2021-2023 F-150) - 1371H230
    $3,532.07

    JBA shorty headers are one of the best performance upgrades available for any application. Hot Rod magazine rated headers as one of the top 10 power parts installed on a vehicle. JBA shorty headers are significantly less restrictive than the stock manifolds on a vehicle and dramatically increase the power and efficiency of an engine. JBA's original shorty design is an innovation of the old long tube header. The new shorty designs yield high performance gains that hot rodders and enthusiasts look for. With durable stainless steel construction that can survive the abuse of racing, towing, and daily driving, these headers can take a beating. With heavy duty features and proprietary technology, like the JBA Firecone collector JBA shorty headers have the capacity to produce more power than any other shorty headers on the market. Each system includes high quality hardware and thorough instructions for a professional no-leak installation.

    1. Mandrel-bent stainless steel primary tubes- Best flow, durability, improved throttle response
    2. Proprietary JBA Firecone collector- Race proven technology for maximum hp/tq gains
    3. Factory style emission connections- Easier installation
    4. Extra thick collector domes- Will not distort like lesser quality headers, no leaks
    5. JBA Badge-Authentic JBA Quality
    6. 3/8 thick machined flanges- Resists warping, prevents leaks, & easier install
    7. Oversized exhaust ports- Increased flow, accommodates cylinder head porting
    8. Available with two optional coatings polished metallic ceramic, titanium ceramic-increased corrosion protection, thermal barrier for lower underhood temperatures
    Learn More
  9. Kooks 1-7/8" SS Headers & GREEN Catted Connection Kit (2015-2024 Mustang GT 5.0L) - 1151H432
    $3,054.29

    Kook’s Headers and Exhaust just released their ALL NEW 1-7/8" Stainless Steel Headers and GREEN Catted Connection Pipes for the 2024 Ford Mustang GT is here! With an all new design made specific for the 2024 model year, these headers are the industry’s first for the 2024. With some of the highest quality exhaust products on the market today, Kooks’ Long Tube Header kit is sure to be the perfect fit for your 2024 Mustang GT.

    These Kits Include:
    1 7/8" x 3" Stainless Steel Long Tube Headers
    Stainless Steel GREEN Catted Connection Pipes for OEM Cat Back Connection
    Kooks 49 State EPA Legal Ultra High Performance Green Cats
    All O2 Bungs And Emissions Components Installed
    All Hardware Required For Install Is Included

    These products are not legal for sale, installation, or use on licensed vehicle in the state of California. And they do NOT meet CARB complianceLearn More

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Kooks Headers

Unlock the full potential of your vehicle with Kooks Headers & Exhaust Systems from Lethal Performance. Our premium-quality upgrades not only boost your car's horsepower and torque but also deliver a sound that turns heads. Whether you're cruising the city streets or dominating the racetrack, our products ensure your ride stands out from the crowd. Experience the perfect blend of performance, durability, and style. Shop now and transform your drive into an unbeatable performance.