EPA engine family
Engine family 7SUNX.110ACX
If this code is printed on your emission label, this is your machine's federal record: sold under SunL Group, Inc., with an engine built by Chongqing Loncin, certified as ATVs.
- Displacement
- —
- Model years
- 2007
- Models certified
- 16
- Certificates
- 1
What this record says
- Sold in the US by
- SunL Group, Inc.
- Engine built by
- Chongqing Loncin
- Vehicle category
- ATVA-Meet EPA & ARB ATV Definition
- Certificate numbers
- 7SUNX.110ACX-002
What the number itself says
Reading 7SUNX.110ACX left to right: 7 is the model-year letter for 2007, SUN is the three-character code the EPA assigned to SunL Group as certificate holder, X marks an off-road certification, .110 is the displacement in litres, so 110cc and ACX is SunL Group'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 4.2 kW (about 6 hp) at 7,500 rpm, driving through an automatic.
- 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
- 4.2 kW (≈6 hp)
- Rated speed
- 7,500 rpm
- Transmission
- automatic
- Sales area
- 50S
- Vehicle built by
- CHINA NANLONG GROUP CO., LTD.
- Test vehicle model
- SLA-110
Filing history and where it was sold
SunL Group filed one certificate under this family, for model year 2007, sold as 50-state, California included.
The vehicle itself is recorded as built by CHINA NANLONG GROUP CO., LTD. in CHINA, while the engine came from Chongqing Loncin. Chassis parts and engine parts therefore have different origins.
Certified emission levels: CO 9.0, HC 0.69, NOx 0.17 g/km.
Models certified under 7SUNX.110ACX
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.
Hanma-108 · Hanma-110 · Hanma-115 · SLA-108 · SLA-109 · SLA-110 · SLA-115 · SLA-70 · SLA-90MR · SLGK-110 · SLGK-70 · SLGK-90 · SLS-035 · Transformer-V4 · Transformer-V6 · Transformer-V7
Other American badges on engines from the same factory
Related in the registry
Source. US EPA annual certification data — EPA Certified Highway Motorcycle Test Results, MY2006-present; EPA Certified Off-Road Motorcycle / ATV / UTV / Rec Vehicle, MY2006-present. Retrieved 2026-09-07. Full provenance and method.