EPA engine family
Engine family M1AMX.124STC
If this code is printed on your emission label, this is your machine's federal record: sold under Amstar Motor Corporation, with an engine built by Chongqing Zongshen.
- Displacement
- —
- Model years
- 2021
- Models certified
- 20
- Certificates
- 1
What this record says
- Sold in the US by
- Amstar Motor Corporation
- Engine built by
- Chongqing Zongshen
- Vehicle category
- All Terrain Vehicle
- Certificate numbers
- M1AMX.124STC-001
What the number itself says
Reading M1AMX.124STC left to right: M is the model-year letter for 2021, 1AM is the three-character code the EPA assigned to Amstar Motor as certificate holder, X marks an off-road certification, .124 is the displacement in litres, so 124cc and STC is Amstar Motor'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".
Rated power on the record is 6.3 kW (about 8 hp) at 8,000 rpm, driving through a CVT (belt and variator).
- 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
- Rated power
- 6.3 kW (≈8 hp)
- Rated speed
- 8,000 rpm
- Transmission
- CVT (belt and variator)
- Sales area
- 49S
- Vehicle built by
- ZHEJIANG LIKO INDUSTRY AND TRADE CO.,LTD.
- Test vehicle model
- FXATV125-SO
Filing history and where it was sold
Amstar Motor filed one certificate under this family, for model year 2021, sold as 49-state (not certified for sale in California).
The vehicle itself is recorded as built by ZHEJIANG LIKO INDUSTRY AND TRADE CO.,LTD. in CHINA, while the engine came from Chongqing Zongshen. Chassis parts and engine parts therefore have different origins.
Certified emission levels: CO 3.2, HC+NOx 0.6 g/km.
Models certified under M1AMX.124STC
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.
BULL1-110 · BULL1-125 · BULL2-110 · BULL2-125 · BULL3-110 · BULL3-125 · BULL4-110 · BULL4-125 · CHALLENGER-110 · CHALLENGER-125 · COCO-110 · COCO-125 · CROSSFIRE-110 · CROSSFIRE-125 · DINO-110 · DINO-125 · PIONEER-110 · PIONEER-125 · PREDATOR-110 · PREDATOR-125
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.