The rebound valving has a progressive curve that is strictly determined via orifice control
5" DOM Mild Steel construction - USA Made here in Cali
1 EA J427GP-350 Front Coilover Kit
1 EA 7976-201 Sway Bar End Link Kit
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3" SS Cat-Back w/Black Tips. 2015-2018 Charger 6.4L. Connects to OEM. 1999 Camaro The rebound valving has aKooks 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