aFe 46-20398-R BladeRunner 2-1/2 IN Aluminum Hot Charge Pipe RedaFe 46 20398 R BladeRunner 2 1 2 IN Aluminum Hot Charge Pipe Red Flow and Performance: Smooth transitions in the mandrel bent aluminum tubing decrease turbulence and minimize pressure loss, increasing horsepower and torque. Perfect Fit: This tube kit includes high quality stainless steel, spring loaded T bolt clamps and heavy duty 5 ply polyester reinforced silicone couplings. A factory style billet aluminum quick connect adapter with an O ring seal