A very detailed model of a Professional Go Kart or Shifter Kart. Has over four hundred parts. Very high level of details including Disc Brakes with accurate pads and a single cylinder motor with exhaust carb, and chain drive![both sold separately as well] Many parts can be rearranged into other configurations. Great for a mechanical aniamtion.Built in 3DS Max 7.1, and exported as a 3DS file. Opened, checked, and rendered in Maya 7.0 to test export integrity. NOTE 3DS is an export format and some smoothing group adjustments are usually needed with a 3DS file.