Kooks 2015-2021 Ford Mustang Shelby GT350R / GT500 Headers & Catted X-Pipe Kit
Header and Connection Kit. 2015-2020 Ford Mustang Shelby GT350 5.2L 4V. Includes 1-3/4″ x 1-7/8″ x 3″ Stainless Steel Long Tube Stepped Headers & 3″ x 2-3/4″ Catted Stainless X-Pipe.
Kooks Headers and Exhaust has been the leader in the High Performance Exhaust Industry for over 50 Years! Since 1962, Kooks takes pride in offering the best Headers and complete exhaust systems for your street, race and off-road applications. We have won hundreds of championships and set countless records in the NHRA, IHRA, NMCA, NMRA, NASCAR, NASA, SCCA and many other racing organizations. Now with three generations of family leadership, we are proud to say that all of our products are handcrafted here in the USA and we are proud to still be independently owned and operated. And don’t forget, “Get Kookin with KOOKS!”
Manufactured In The USA. Kooks Uses T304 Aircraft Quality Stainless Steel. Kooks Products are Backed by a Limited Lifetime Warranty To the Original Purchaser. Kooks Products Are Dyno And Race Tested and Designed For Maximum Power.
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Function Factory Performance takes “customer service” very personally. We understand that finding the right parts can be overwhelming. Education and awareness are the principles that keep us ahead of the curve. Let us make this experience simple, easy, and awesome, so without hesitation give us a call at (480) 576-8606, feel free to direct message on our live chat, or CLICK HERE to contact us via email.
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Frequently Asked Questions
For made-to-order or specialty items (like carbon fiber parts or custom builds), the turnaround can take up to 8 weeks — perfection takes time.
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or email Support@FFPerformance.coWe know car parts can be a maze — good thing we brought the map. Our team’s here to keep things smooth, simple, and maybe even a little fun.
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