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!"

2015-2022 Ford Mustang GT 5.0L 4V. 3in. Stainless Steel H.O GREEN Catted Front Connection pipes. 3in. 16GA 304 Stainless Steel construction. Ball and socket style connection to Headers. Kooks High Output GREEN Cats feature a 4-1/2in. 300 Cell High Flow Substrate. Does not Include Clamps. Must be used with Kooks Headers and OEM Adapters or Kooks Connection-Back Exhaust. DOES NOT CONNECT TO OEM EXHAUST. Kooks GREEN Cats are suitable for use with forced induction

2015-2022 Ford Mustang GT 5.0L 4V. 3in. Stainless Steel High Output GREEN Catted Front Connection pipes. 3in. 16GA 304 Stainless Steel construction Ball and socket style connection to HeadersKooks High Output GREEN Cats feature a 4-1/2in. 300 Cell High Flow Substrate Does not Include Clamps Requires Kooks Headers and OEM Adapters or KOOKS Connection-Back Exhaust DOES NOT CONNECT TO OEM EXHAUSTKOOKS GREEN Cats are suitable for use with forced induction

2015-2022 Ford Mustang GT 5.0L 4V. 3" Stainless Steel H.O GREEN Catted Front Connection pipes. 3" 16GA 304 Stainless Steel construction. Ball and socket style connection to Headers. Kooks High Output GREEN Cats feature a 4-1/2" 300 Cell High Flow Substrate. Does not Include Clamps. Must be used with Kooks Headers and OEM Adapters or Kooks Connection-Back Exhaust. DOES NOT CONNECT TO OEM EXHAUST. Kooks GREEN Cats are suitable for use with forced induction

2015-2022 Ford Mustang GT 5.0L 4V. 3" Stainless Steel High Output GREEN Catted Front Connection pipes. 3" 16GA 304 Stainless Steel construction Ball and socket style connection to HeadersKooks High Output GREEN Cats feature a 4-1/2" 300 Cell High Flow Substrate Does not Include Clamps Requires Kooks Headers and OEM Adapters or KOOKS Connection-Back Exhaust DOES NOT CONNECT TO OEM EXHAUSTKOOKS GREEN Cats are suitable for use with forced induction

3in. Stainless Steel H.O. GREEN Catted Connnection pipes. Connects Kooks Headers to Kooks Exhaust. DOES NOT CONNECT TO OEM EXHAUST

3" Stainless Steel H.O. GREEN Catted Connnection pipes. Connects Kooks Headers to Kooks Exhaust. DOES NOT CONNECT TO OEM EXHAUST

Kooks 15-20 Ford Mustang GT 5.0L 3in SS GREEN Catted Connection Pipes

3in. SS GREEN Catted Connnection Pipes. 2015-2020 Mustang GT 5.0L.

3" SS GREEN Catted Connnection Pipes. 2015-2020 Mustang GT 5.0L.

3in. H.O. GREEN Catted Conn. Pipes.

3" H.O. GREEN Catted Conn. Pipes.

3in. Connection

3" Connection