Truck Exhaust Kits - DIY dual exhaust system 2.5 pipe Flowmaster 40 Convert your single exhaust to dual exhaust This product is a simple cut-and-clamp Installation. Easy to install - most jobs take 1 afternoon Kit Contents: (2x) 2.5" Wrinkle Bend Pipe + (1x) Flowmaster 40 series Muffler + 1 Adapter + All necessary Hardware Hangers and Clamps for installation Systems designed to replace from factory muffler back Shipping Dimension: 48x20x10