Signature Series Stepped Header and Catted Connection Kit 2009+ 5.7L HEMI mustang but a huge increase in

but a huge increase in consistency of the vehicle when pushed to the limits of the tire

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

It includes manganese phosphate coated hardened chromoly steel shank studs

Upon the high loads that these see

Signature Series Stepped Header and Catted Connection Kit 2009+ 5.7L HEMI mustang but a huge increase inKooks 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