NAICS 336991

Overview

The North American Industry Classification System (NAICS) is the federal statistical standard for classifying U.S. business establishments to collect, analyze, and publish data about the U.S. economy. Developed by the Economic Classification Policy Committee with Canada and Mexico under the Office of Management and Budget, NAICS replaced SIC in 1997 and is updated on a five-year cycle; the current vintage is 2022. ¹

NAICS 336991 covers establishments primarily engaged in manufacturing motorcycles, bicycles, tricycles and similar equipment, and parts. Official cross-references clarify that children’s vehicles (except bicycles and metal tricycles) fall under 339932, and golf carts or similar personnel carriers are classified in 336999. Agencies use 336991 when procurements or programs relate to the manufacture of these vehicles and their parts. ²

What this NAICS covers

• Manufacturing complete motorcycles. ²
• Manufacturing complete bicycles. ²
• Manufacturing tricycles and similar cycle equipment. ²
• Manufacturing parts for motorcycles. ²
• Manufacturing parts for bicycles. ²
• Manufacturing parts for tricycles and similar cycle equipment. ²

Related NAICS and PSC codes

Scope notes and official cross-references

• Children’s vehicles (except bicycles and metal tricycles) are classified in 339932, not 336991. ²
• Golf carts and similar personnel carriers are classified in 336999, not 336991. ²
• Motor vehicle parts are classified in 3363 (Motor Vehicle Parts Manufacturing), not in 336991. ²

Frequently asked questions

• What does 336991 include?
  It comprises establishments primarily engaged in manufacturing motorcycles, bicycles, tricycles and similar equipment, and parts. It does not cover retail dealerships or golf carts; those are addressed in other NAICS codes and cross-references outside 336991. ²

• Are electric bicycles or electric motorcycles explicitly mentioned in 336991?
  Not specified by official sources ². The official definition references “motorcycles, bicycles, tricycles and similar equipment, and parts” without detailing propulsion type.

• How does 336991 differ from 336999 and 339932?
  336991 is for manufacturing motorcycles/bicycles and their parts. 336999 covers other transportation equipment such as golf carts, while 339932 covers children’s vehicles (excluding bicycles and metal tricycles). ²

• Do motorcycle or bicycle dealers fall under 336991?
  No. Dealerships are classified in Retail Trade, such as 44122 (Motor Vehicle Dealers, except Automobile) and related national industries, not in 336991. Consult the NAICS 2022 industry definitions for the appropriate dealer code. ³

• Which PSC often aligns with end items produced under 336991?
  PSC 2340 (“Motorcycles, Motor Scooters, and Bicycles”) covers complete motorcycles, motor scooters, and bicycles in supply buys. Parts and accessories may be coded elsewhere per the PSC Manual and agency guidance. ⁴

Useful resources

• Census NAICS overview and revision cadence (includes 2022 vintage context). ¹
• Census NAICS industry page with the official definition and cross-references for 336991. ²
• Census Retail Trade NAICS (e.g., 44122 and related dealer industries). ³
• PSC Tool — 2340 “Motorcycles, Motor Scooters, and Bicycles.” ⁴

References

1. U.S. Census Bureau — About Industry (NAICS purpose, history, and update cycle). https://www.census.gov/topics/employment/industry-occupation/about/industry.html
2. U.S. Census Bureau — 2022 NAICS Code 336991 (Industry definition, examples, cross-references). https://www.census.gov/naics/?input=336991&year=2022&details=336991
3. U.S. Census Bureau — 2022 NAICS 44122 (Motor Vehicle Dealers, except Automobile). https://www.census.gov/naics/?input=44122&year=2022&details=44122
4. PSC Tool — PSC 2340 “Motorcycles, Motor Scooters, and Bicycles.” https://psctool.us/psc/2340