One part number, two perfectly matched parts. This behind the seat speaker bracket kit and 6-inch by 9-inch Pioneer upgraded speaker combo is designed for easy of installation and will perfectly compliment your front upgraded kick panel speakers. Kit includes (1) pair of behind the seat speaker brackets and (1) pair of 400w Pioneer 6-inch by 9-inch speakers. Assembly required. Will not work with truck that have original retractable seat belts where the retractor mounts on the side of the B pillar.