Engine family 7KNGX.125DM3

What this record says

Sold in the US by

Kangchao Group (Usa), Inc.

Engine built by

Chongqing Loncin

Vehicle category

Off-Road Motorcycle

Certificate numbers

7KNGX.125DM3-001-R01

What the number itself says

Reading 7KNGX.125DM3 left to right: 7 is the model-year letter for 2007, KNG is the three-character code the EPA assigned to Kangchao Group (Usa) as certificate holder, X marks an off-road certification, .125 is the displacement in litres, so 125cc and DM3 is Kangchao Group (Usa)'s 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 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 6.1 kW (about 8 hp) at 7,500 rpm, driving through a 3-speed manual gearbox.

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

6.1 kW (≈8 hp)

Rated speed

7,500 rpm

Transmission

3-speed manual gearbox

Sales area

50S

Vehicle built by

Zhejiang Health Ascend Industry Co., Ltd.

Test vehicle model

KCG125DB

Filing history and where it was sold

Kangchao Group (Usa) filed one certificate under this family, for model year 2007, sold as 50-state, California included.

The vehicle itself is recorded as built by Zhejiang Health Ascend Industry Co., Ltd. in China, while the engine came from Chongqing Loncin. Chassis parts and engine parts therefore have different origins.

Certified emission levels: CO 10.9, HC 0.24, NOx 0.14 g/km.

Models certified under 7KNGX.125DM3

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.

KCG110DB · KCG125DB · KCG90 · MTR110DB · MTR125DB · MTR90 · ODS110DB · ODS125DB · ODS90 · SSR110 · SSR125 · SSR90 · ZHA110DB · ZHA125DB · ZHA90 · ZTX110DB · ZTX125DB

Other American badges on engines from the same factory

• Chongqing Loncin · 150cc5 American brands · 2006–2008