aFe 46-20668-B BladeRunner 2-1/2 IN Aluminum Hot Charge Pipe BlackaFe 46 20668 B BladeRunner 2 1 2 IN Aluminum Hot Charge Pipe Black Flow and Performance: Smooth transitions in the mandrel bent aluminum pipe decreases turbulence and minimizes pressure loss, increasing horsepower and torque. Premium Hardware: This kit includes high quality, stainless steel, SmartSeal clamps and a heavy duty, 5 ply, polyester reinforced silicone coupling. This charge pipe kit also features a factory style billet aluminum quick connect