aFe Twisted 1-3/4in 304SS Shorty Header 20-23 GM 2500/3500HD 6.6L V8 Exterior Styling>Diffusers individually adjustable to allow depth

individually adjustable to allow depth into the bumper to be set according to personal taste

2kg/mm (347lb/in) front rated springs that provide a 20mm drop while the 5

5-percent greater coolant capacity to improve cooling efficiency

These 2 diameter heavy wall links feature race style 1 Uniballs for superior strength

aFe Twisted 1-3/4in 304SS Shorty Header 20-23 GM 2500/3500HD 6.6L V8 Exterior Styling>Diffusers individually adjustable to allow depth1 3 4" 304 Stainless Steel Construction: This system is constructed of 1 3 4" mandrel bent 304 stainless steel tubing for maximum strength and durability. Powerful Sound: This system produces a powerful sound unleashing all available horsepower and torque. Installation: Utilizing factory style flanges this system is a direct bolt on system, which requires no cutting or modifications for a hassle free installation. Heavy Duty Flanges: Factory style