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.
JOCKEYSâ MINIMUM WEIGHTS IN FLAT RACING TO BE RAISED / 29 Nov 12. The British Horseracing Authority (BHA) announced today that, as of 1st January 2013, the minimum riding weight for Flat racing will be raised by 2lb, to 8 stone.