National Producer Number definition, categories, type and other relevant information provided by All Acronyms. NPN stands for National Producer Number Search for acronyms, abbreviations,
Height Considerations. There are no height limits for jockeys. However, jockeys tend to be shorter than normal to meet the weight guidelines. The average height for a jockey is between 4 feet 10 inches and 5 feet 6 inches.eight Limits. Depending on specific race and track guidelines, a jockey must weigh between 108 and 118 pounds without clothing and equipment, which can add a significant number of pounds.
The average jockey has a light but athletic build, and body weight is anywhere between 108 to 118 pounds. The weight assigned for the Kentucky Derby is 126 pounds (including jockey's body weight and equipment).Jockeys typically range from about 4'10 to 5'6 in height.Source(s): HOrse owner and breeder Avid horse racing enthusiast. Source(s):eneral Facts Here are some general facts about jockeys and their height and weight limitations, licensing, and horse ownership: All jockeys must have a riding license in the state in which they compete. A jockey must be at least 16 years old before he or she is eligible for a jockey's license.