One part number, two perfectly matched parts. This behind the seat speaker bracket kit and 6 in.x9 in. 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 in.x9 in. speakers. Assembly required. (SPEAKER BRACKETS WILL NOT WORK IF GAS TANK IS IN STOCK LOCATION)