2009 - 13 C6 Corvette Headers with 1 - 78 dia. 31 long primaries and 3 slip fit collectors. Includes 3 X - pipe, metallic substrate high flow converters, O2 extensions, Accuseal clamps, oil cooler lines, compression fittings, zip ties, cable clamps, etc. Fits factory 2.5 dia. axleback connection point.