Engine family 7KNBX.125DM3

What this record says

Sold in the US by

Kenbo, LLC

Engine built by

Chongqing Yinxiang Motorcycle(Group) Co., Ltd

Vehicle category

Off-Road Motorcycle

Certificate numbers

7KNBX.125DM3-002

What the number itself says

Reading 7KNBX.125DM3 left to right: 7 is the model-year letter for 2007, KNB is the three-character code the EPA assigned to Kenbo as certificate holder, X marks an off-road certification, .125 is the displacement in litres, so 125cc and DM3 is Kenbo'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 5.6 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

5.6 kW (≈8 hp)

Rated speed

7,500 rpm

Transmission

3-speed manual gearbox

Sales area

50S

Vehicle built by

Chongqing Yinxiang Motorcycle (Group) Co., Ltd.

Test vehicle model

CY125-1

Filing history and where it was sold

Kenbo filed one certificate under this family, for model year 2007, sold as 50-state, California included.

The vehicle itself is recorded as built by the same company, Chongqing Yinxiang Motorcycle (Group) Co., Ltd. in China — engine and chassis from one source.

Certified emission levels: CO 10.9, HC 0.44, NOx 0.23 g/km.

Models certified under 7KNBX.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.

CY110-1 · CY110-2 · CY110-3 · CY110-4 · CY110-5 · CY125-1 · CY125-2 · CY125-3 · CY125-4 · CY125-5 · CY90-1 · CY90-2 · CY90-3 · CY90-4 · CY90-5