Product classification
HS code for Moped engine: 8407.31
Engines, reciprocating piston engines, of a kind used for the propulsion of vehicles of chapter 87, of a cylinder capacity not exceeding 50cc.
Classification of moped engine under HS 8407.31
The classification of a moped engine under HS code 8407.31 is dictated by its function as a power source rather than the vehicle itself. Chapter 84 encompasses nuclear reactors, boilers, machinery, and mechanical appliances. Heading 8407 is dedicated to spark-ignition reciprocating or rotary internal combustion piston engines. Within this heading, the code 8407.31 specifically identifies engines used for the propulsion of vehicles classified in Chapter 87 (which includes mopeds) with a cylinder capacity not exceeding 50cc. It is important to note that while the moped itself is in Chapter 87, the engine as a standalone component is classified in Chapter 84, following the Note 2 to Section XVI, which directs parts of general use or specific machinery components to their respective headings. This distinction is critical for manufacturers who export engines separately from the vehicle frames. The engine must be a spark-ignition type; compression-ignition engines (diesel) are excluded from this specific code and fall under heading 8408.
- Covers
- 49cc spark-ignition moped engines
- Reciprocating piston engines for motorized bicycles
- Replacement internal combustion engines for small scooters
- Complete engine blocks for vehicles under 50cc
- Rotary internal combustion engines for small cycles
- Also under 8407.31
- Honda Ruckus engine
- Piaggio Zip 50 engine
- Yamaha Jog 50 engine
- Kymco Agility 50 engine
- SYM Fiddle II 50 engine
Codes often confused with 8407.31
Common mistake. A frequent error is classifying these engines under HS code 8714.10, which covers parts and accessories of motorcycles and mopeds. However, according to Section XVI Note 2, engines are specifically excluded from Chapter 87 parts and must be classified in Chapter 84. Another common misclassification is HS code 8408.20, which is for compression-ignition (diesel) engines used for vehicle propulsion. Additionally, if the engine displacement exceeds 50cc, it must be moved to 8407.32. Importers must verify the exact displacement and ignition type to avoid these common pitfalls, as the duty rates can vary significantly between engine types and sizes.
Top exporters and importers of HS 840731 (the code used for moped engine), 2025
In 2025, the largest exporter of HS 840731 (the code used for moped engine) in UN Comtrade data was China, with 55% of world exports; the largest importer in UN Comtrade data was Türkiye, with 39% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 840731, not only moped engine.
Top exporters 2025 · share of world exports
- 1 China $43M 55% of world exports
- 2 Vietnam* ~$17M 22% of world exports · partner records ↗
- 3 Italy $7.6M 9.7% of world exports
World total: $78M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Türkiye $43M 39% of world imports
- 2 Japan $23M 21% of world imports
- 3 Vietnam* ~$17M 15% of world imports · partner records ↗
World total: $111M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM codes for moped engine
Brazil splits HS 8407.31 into 2 NCM codes. Pick the one that matches your product:
- 8407.31.10Petrol vehicle engines, 1 cyl, max 50 cc
- 8407.31.90Other petrol vehicle engines, max 50 cc
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about moped engine
What is the HS code for Moped engine?
The HS code for Moped engine is 840731 (Engines; reciprocating piston engines, of a kind used for the propulsion of vehicles of chapter 87, of a cylinder capacity not exceeding 50cc). The HS code for a spark-ignition reciprocating piston engine for a moped with a capacity not exceeding 50cc is 8407.31.
How do I classify Moped engine for customs?
Moped engine is classified under HS code 840731 — Engines; reciprocating piston engines, of a kind used for the propulsion of vehicles of chapter 87, of a cylinder capacity not exceeding 50cc. This is a 6-digit subheading level code.
Are diesel moped engines covered here?
No, diesel or compression-ignition engines are classified under HS code 8408.20, regardless of whether they are used for mopeds or other vehicles.
Which countries are the top exporters of moped engine (HS 840731)?
In 2025, the top exporters of HS 840731 (the code used for moped engine) in UN Comtrade data were China ($43M, 55% of world exports), Vietnam (about $17M) and Italy ($7.6M). World exports came to about $78M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of moped engine (HS 840731)?
In 2025, the top importers of HS 840731 (the code used for moped engine) in UN Comtrade data were Türkiye ($43M, 39% of world imports), Japan ($23M) and Vietnam (about $17M). World imports came to about $111M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Moped engine the same in all countries?
The base HS code 840731 for Moped engine is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for moped engine in Brazil?
Brazil splits HS 840731 into 2 NCM codes, so the right one for moped engine depends on the product's details: 8407.31.10 (Petrol vehicle engines, 1 cyl, max 50 cc), 8407.31.90 (Other petrol vehicle engines, max 50 cc).