ECX Electrix 8400 2wd 1/18 Smash Monster Truck Blue Durable, nylon composite chassis is completely upgradeable with most 1/18-scale option parts Powerful Dynamite electronics including a potent 280-sized motor and an impressive ESC Dynamite SpeedTreads wheels and tires provide high-speed traction and precise handling on any terrain Completely ready to run, everything included in the box An unstoppable power train?limited slip differential, adjustable slipper clutch and metal driveshafts