C5 Corvette Long System 1997-2000With race inspired technology built into every system, you're looking at the very best the performance exhaust industry has to offer. Our C5 systems are available with 1 3 4", 1 7 8" or 2" primaries with catted or non catted X pipe mid section. 1 3 4" mid sections have a 2 1 2" reduction at the flange to connect to stock system. Of course, these are manufactured using the highest quality 304 S S available and require no modifications to install.