Weight & Clearance

Weight shall not exceed 5 ounces (141.75 GRAMS). The reading of the official scale will be considered final. The car may be hollowed out and built up to the maximum weight by the addition of wood or metal only, provided the material is securely built into the body or firmly affixed to it. 

The minimum clearance between the bottom of the car and the track surface shall be 3/8 inch so the car will clear the center guide strip on the track. 

If weights are underneath the car, they must be recessed/positioned to provide enough clearance.

The maximum overall width (including wheels and axles) shall not exceed 2-3/4 inches.  

The minimum width between the wheels shall be 1-3/4 inches so the car will clear the center guide strip on the track. 

No liquids or loose materials of any kind are permitted in or on the car.