This entry includes a CNC machined upper spring perch
A progressive valve will have a softer low-speed force that ramps up very quickly as shaft speed increases
and installation instructions for a factory quality installation
We have won hundreds of championships and set countless records in the NHRA
Designed specifically for the first generation Miata's hood lines and low pressure zones behind the radiator and above the wheel arches
1-3/4" x 1-7/8" Stainless Headers & Comp. Only Exhaust. 2015-2020 Shelby GT350. 2019 chevrolet corvette This entry includes a CNCKooks 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