Remarkable Power RK7548 Exhaust Flex Pipe 2.5" x 12" Heavy Duty Stainless Steel 16"OL Brand New Flex Pipe It comes with 1 Piece of Double Braided Flex Pipe 2.5" x 12" Inlet Diameter: 2.5 Directly bolt-on with no modification require Flex Pipe Total Length (including extension) : 16" Profession Installation highly recommended,no Instruction will be provided