aFe BladeRunner 3-1/2in Aluminum Cold Charge Pipe Black RAM Diesel Trucks 25-26 L6-6.7L (td)Smooth transitions in the mandrel bent aluminum pipes decrease turbulence and minimize pressure loss, increasing horsepower and torque. This kit includes high quality, stainless steel, spring loaded T Bolt clamps and heavy duty, 5 ply, polyester reinforced silicone couplings for superior strength and durability. Finished in wrinkle black powder coating with a unique laser etched aFe POWER logo for a custom look.