aFe 46-20344-R BladeRunner 2-1/4 IN & 2-1/2 IN Aluminum Hot and Cold Charge Pipe Kit RedaFe 46 20344 R BladeRunner 2 1 4 IN & 2 1 2 IN Aluminum Hot and Cold Charge Pipe Kit Red Flow and Performance: Smooth transitions in the 2 1 4" and 2 1 2" mandrel bent aluminum tubing decrease turbulence and minimize pressure loss, increasing horsepower and torque. Textured Red Powder Coated Finish: Not only does the red powder coated finish make for a striking look, but it also insulates the tube from engine heat and protects from corrosion. Premium