This is the Tamiya factory replacement lower deck for the BBX (BB-01) chassis. It serves as the main structural base of the vehicle, providing mounting points for drivetrain components, electronics, and suspension assemblies. Replacing a cracked or worn lower deck restores the structural integrity of the chassis to original specification. Features: Factory Tamiya replacement part for the BBX platform Molded plastic construction Provides mounting points for drivetrain and electronics 7/7/26 cs