Magnaflow- 05-09 GT Axle Back System Material: 100% Stainless Steel Tubing O.D. Size: 2.5in. System Type: Axle-Back TIP O.D. Size: 4in. TIP Quantity: 2 Single/Dual: Dual Exit Position: Rear Exit Features and Benefits: Lifetime Warranty, Dyno Tested And Proven To Make Power,... MSRP: Was: Now: $755.00 Add to Cart