Flowmaster 1040FM Header-Back Pipe KitExhaust System Kit Header Back Pipe Kit Header Back Pipe Kit; Dual; Dual Rear Exit; Incl. Tubing Only 3. 0 in. Dia. Balance Pipe Offset Inlet Offset Outlet Mufflers Required; Muffler Not Included; SPECIFICATIONS: Automotive Item Grade: High Performance Color: Gray Exhaust Pipe Wall Max Gauge: 16 Exhaust Type: Dual Exit Position: Dual Rear Exit Style: Straight Inlet Inside Diameter: 3. 000 in. Material: Aluminized Steel Mount Type: Uses New Hangers