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.
0845 838 2040. Weight Control Among Jockeys. They called the scale âthe oracleâ, and they lived in slavery to it. In the 1920s and the 1930s, the imposts, or weights horses, were a sign to carry in races generally ranged from 83 lbs to 130 or more, depending on the rank of the horse and the importance of the race.