Shop MagnaFlow Performance Exhaust Systems for the 2009 INFINITI QX56, including cat-back and one-piece exhaust systems for select engines, trims, and configurations. Engineered to produce MagnaFlow's deep signature exhaust sound, these systems feature premium materials and easy direct-fit installation. 2009 INFINITI QX56 exhaust options include 3-inch main piping diameters; polished exhaust tip finishes; single passenger side rear exit styles. Use Shop by Vehicle to find the system for your QX56.