easily revalved by the user
quickly at low shaft speeds and level off at higher shaft speeds
and shaves even more unsprung weight
The operating temperature of the liner ranges from -65º to 325ºF
The process is similar to jetting a carburetor
1-7/8" Headers & GREEN Exhaust Kit w/Polished Quad Tips. 2016-2024 Camaro SS/ZL1 1994 pontiac firebird easily revalved by the userKooks 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