The Injen engineers spent countless hours of R&D to produce the perfect balance of pure, race-inspired performance and tone. The Injen headers are constructed of near equal length mandrel-bent stainless steel tubing and use thick flanges for added strength and to ensure a leak-free seal. The smooth curves and increased diameter of this header helps remove restriction and keep exhaust gas streaming smoothly for improved performance and response. Injen has included all components for a hassle-free installation with no modifications necessary.