What size quad can a 13 year old race?

Answer 1

The following is from one of my local Motocross tracks, most local tracks should have something similar: 0-85cc 7-15 Beginner 0-85cc 14-15 years 150cc and smaller 4 Stroke, 15 years old & younger
 and any of the novice or intermediate classes depending on their ability

Answer 2

****** IN MOTOCROSS AT THE AGE OF THIRTEEN THE CLASSES ARE **85 CC BEG **65/85 CC OPEN **** IN ATV OR QUADS**** ** 90 CC LOWER **

Answer 3

Yes they have races for 12 - 15 year olds for a 125 2 stroke bikes.

Answer 4

85, supermini class, 125.