Engine family 9AMSC.049ZNE

What this record says

Sold in the US by

Amstar Motors LLC

Engine built by

Taizhou Zhongneng (ZNEN)

Vehicle category

Highway Motorcycle - Ia (<50cc)

Certificate numbers

9AMSC.049ZNE-001

What the number itself says

Reading 9AMSC.049ZNE left to right: 9 is the model-year letter for 2009, AMS is the three-character code the EPA assigned to Amstar Motors as certificate holder, C marks a highway (street-legal) certification, .049 is the displacement in litres, so 49cc and ZNE is Amstar Motors' own sequence for that year. Nothing in the number names the factory — that comes from the certificate itself.

The engine, as described on the certificate

The test vehicle Amstar Motors submitted for this family (model ZN50QT-11) carried engine code FT1390MB.

The certificate describes a four-stroke, single-cylinder engine with 2 valves per cylinder fed by carburettor, run by an ignition control module (CDI-type ignition). There is a catalytic converter in the exhaust, recorded as "TWC, single bed, open loop". The head carries a pulse secondary-air (PAIR) valve.

Rated power on the record is 2 kW (about 3 hp) at 7,000 rpm, driving through a CVT (belt and variator).

Engine code on test vehicle

FT1390MB

Cylinders / valves

1 · 2 per cylinder

Cycle

four-stroke

Fuel delivery

carburettor

Oxygen sensor

no

Engine control

ICM

Catalytic converter

TWC, single bed, open loop

Air injection

PAIR

Rated power

2 kW (≈3 hp)

Rated speed

7,000 rpm

Transmission

CVT (belt and variator)

Sales area

49S

Vehicle built by

Taizhou Zhongneng Motorcycle Co.,Ltd.

Test vehicle model

ZN50QT-11

Filing history and where it was sold

Amstar Motors filed one certificate under this family, for model year 2009, sold as 49-state (not certified for sale in California).

The vehicle itself is recorded as built by the same company, Taizhou Zhongneng Motorcycle Co.,Ltd. in China — engine and chassis from one source.

Certified emission levels: CO 0.7, HC 0.2, NOx 0.7 g/km.

Other records carrying the same engine code

Amstar Motors certified an engine with this code under one other family number — the same engine filed again in another year, or in an off-road and a street version:

• AAMSC.049ZNE (2010)

Other certificate holders whose test vehicle carried the same engine code (10 of 17 shown):

• AA Powersports Inc.9ASRC.049ZNE2009 · same engine factory
• Baja Inc.9BJMC.049ZNE2009 · same engine factory
• BMS Motorsports, Inc.DBMSC.049ZNE2013 · same engine factory
• BMS Motorsports, Inc.CBMSC.049ZNE2012 · same engine factory
• BMS Motorsports, Inc.BBMSC.049ZNE2011 · same engine factory
• BMS Motorsports, Inc.ABMSC.049ZNE2010 · same engine factory
• BMS Motorsports, Inc.9BMSC.049ZNE2009 · same engine factory
• Chironex Inc.ACRNC.049ZNE2010 · same engine factory
• Flyscooters LLCAFLSC.049ZNE2010 · same engine factory
• Flyscooters LLC9FLSC.049ZNE2009 · same engine factory

A shared code from the same factory is a strong search lead. From a different factory it is as often a naming coincidence. Either way it narrows the search; it does not settle it — measure before you buy.

Models certified under 9AMSC.049ZNE

Every model designation the importer listed on this certificate. If your machine's model name appears here, this is the right record — even if the name on the bodywork is slightly different.

ZNEN ZN50QT-11 · ZNEN ZN50QT-11A · ZNEN ZN50QT-12 · ZNEN ZN50QT-15 · ZNEN ZN50QT-15A · ZNEN ZN50QT-15B · ZNEN ZN50QT-15D · ZNEN ZN50QT-15E · ZNEN ZN50QT-19 · ZNEN ZN50QT-20 · ZNEN ZN50QT-21 · ZNEN ZN50QT-24A · ZNEN ZN50QT-28 · ZNEN ZN50QT-6 · ZNEN ZN50QT-7 · ZNEN ZN50QT-8 · ZNEN ZN50QT-8B · ZNEN ZN50QT-8C · ZNEN ZN50QT-9 · ZNEN ZN50QT-A · ZNEN ZN50QT-E · ZNEN ZN50QT-F

Other American badges on engines from the same factory

• Taizhou Zhongneng (ZNEN) · 49-50cc17 American brands · 2008–2026
• Taizhou Zhongneng (ZNEN) · 150cc17 American brands · 2009–2026
• Taizhou Zhongneng (ZNEN) · 250cc3 American brands · 2009–2011