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Kooks COMPETition only products are built for use in motorsports competition only. these products are not intended for street use.
Competition Only

1-7/8" Header and Catted (X) Connection Kit. 2011-2014 Mustang GT 5.0L 4V.

1-7/8" Header and Catted (H) Connection Kit. 2011-2014 Mustang GT 5.0L 4V.

2" Header and Catted (H) Connection Kit. 2011-2014 Mustang GT 5.0L 4V.

1-3/4" x 1-7/8" Header and Catted Connection Kit. 2015-2020 Shelby GT350 5.2L 4V

1-5/8" Header and Catted Connection Kit. 2003-2004 Mercury Marauder 4.6L 4V.

1-5/8" Header and Catted Connection Kit. 2009-2010 Ford F-150/Raptor 5.4L 3V.

1-3/4" Header and Catted Connection Kit. 2011-2014 Ford F150 Coyote 5.0L 4V.

1-7/8" Header and Catted Connection Kit. 2011-2014 Ford F150 Coyote 5.0L 4V.

1-7/8" Header and Catted Connection Kit. 2010-2014 Ford Raptor SVT 6.2L 4V.

1-3/4" Header and Catted Connection Kit. 2015+ Ford F150 Coyote 5.0L 4V.

1-7/8" Header and Catted Connection Kit. 2015+ Ford F150 Coyote 5.0L 4V.

1-3/4" Header and Catted Connection Kit. 1997-2004 Corvette LS1/LS6 5.7L.

1-7/8" Header and Catted Connection Kit. 1997-2004 Corvette LS1/LS6 5.7L.

1-3/4" Emissions Header and Catted Connection Kit. 1997-2000 Corvette 5.7L.

1-7/8" Emissions Header and Catted Connection Kit. 1997-2000 Corvette 5.7L.

1-3/4" Emissions Header and Catted Connection Kit. 2001-2004 Corvette 5.7L.

1-7/8" Emissions Header and Catted Connection Kit. 2001-2004 Corvette 5.7L.

1-3/4" Header and Catted Connection Kit. 2005-2008 Corvette LS2/LS3 6.0L/6.2L.

1-3/4" Header and Catted Connection Kit. 2009-2013 Corvette LS3 6.2L.

1-7/8" Header and Catted Connection Kit. 2005-2008 Corvette LS2/LS3 6.0L/6.2L.

1-7/8" Header and Catted Connection Kit. 2009-2013 Corvette LS3 6.2L.

1-7/8" Header and Catted Connection Kit. 2006-2013 Corvette Z06 7.0L.

1-7/8" Header and Catted Connection Kit. 2014-2019 Corvette LT1 6.2L

1-7/8" x 2" Header and Catted Connection Kit. 2014-2019 Corvette LT1 6.2L