336991 — Motorcycle, Bicycle, and Parts Manufacturing
Description
This U.S. industry comprises establishments primarily engaged in manufacturing motorcycles, bicycles, tricycles and similar equipment, and parts (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Exclusions & Cross-References
- Manufacturing children's vehicles (except bicycles and metal tricycles)--are classified in Industry 339930,
- Doll, Toy, and Game Manufacturing; and
- Manufacturing powered golf carts and other similar motorized passenger carriers--are classified in U.S.
- Industry 336999, All Other Transportation Equipment Manufacturing.
Overview Facts
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 3751 - Motorcycles, Bicycles, and Parts (via SIC1987:3751→NAICS1997:336991→2002:336991→2007:336991→2012:336991→2017:336991→2022:336991)
- SIC 3944 - Games, Toys, and Children’s Vehicles, Except Dolls and Bicycles (via SIC1987:3944→NAICS1997:336991→2002:336991→2007:336991→2012:336991→2017:336991→2022:336991)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC 2340 — Motorcycles, Motor Scooters, and Bicycles
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 336991 valid in 2022? ▾
Yes, 336991 is a valid 6-digit 2022 NAICS national industry code representing 'Motorcycle, Bicycle, and Parts Manufacturing' under Sector 31-33 in the official classification index.
What is the SBA size standard for NAICS code 336991? ▾
The Small Business Administration (SBA) has established a small business size standard of 1,050 employees for NAICS code 336991 (Motorcycle, Bicycle, and Parts Manufacturing), calculated based on employees.
What is the legacy SIC equivalent for NAICS 336991? ▾
According to official Census Bureau concordance tables, NAICS code 336991 (Motorcycle, Bicycle, and Parts Manufacturing) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 3751 - Motorcycles, Bicycles, and Parts, 3944 - Games, Toys, and Children’s Vehicles, Except Dolls and Bicycles.
Related Pages & Tools
Further regulatory reference links for NAICS code 336991:
- Sector 31-33 Directory Hub — List of related industries in the Manufacturing sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- NAICS 336991 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Motorcycle, Bicycle, and Parts Manufacturing).
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.