The Manta Ray is the third in the REV Series of Mini 4WD chassis cars. The Manta Ray is built on the AR chassis platform. The new Mini 4WD AR chassis platform from the REV Series has been designed with an aerodynamic theme and it offers improved user-friendliness both on and off the track. This is the Tamiya 94989 - JR Aero Manta Ray Black Metallic SP (AR Chassis) Limited Specs and Features: Length: 155mm Kit features the Aero Manta Ray body molded in Black Metallic. AR chassis is made from ABS material molded in Black. A-Parts are molded in Black. Comes with narrow lightweight wheels in Metallic Red and large diameter arched tires. Newly designed sticker sheet included. Type 130 motor included. Features 4.2:1 gear ratio. Two AA batteries are required (sold separately). A wide range of Grade-Up Parts is available separately to customize your machine.