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.
Jockey being weighed post-race, holding equipment. Jockeys must be light to ride at the weights which are assigned to their mounts. There are horse carrying weight limits, that are set by racing authorities. The Kentucky Derby, for example, has a weight limit of 126 lb (57 kg) including the jockey's equipment.The weight of a jockey usually ranges from 108 to 118 lb (49 to 54 kg). Despite their light weight, they must be able to control a horse that is moving at 40 mph (64 km/h) and weighs 1,200 lb (540 kg).Though there is no height limit for jockeys, they are usually fairly short due to the weight limits.Jockeys typically stand around 4 ft 10 in (1.47 m) to 5 ft 6 in (1.68 m).he weight of a jockey usually ranges from 108 to 118 lb (49 to 54 kg). Despite their light weight, they must be able to control a horse that is moving at 40 mph (64 km/h) and weighs 1,200 lb (540 kg).