EPA engine family
Engine family ARHPC.050SA1
If this code is printed on your emission label, this is your machine's federal record: sold under Rhon Powersports Usa, Inc., with an engine built by Qingqi Group Ningbo Rhon Motorcycle Co., Ltd, certified as street-legal scooters and motorcycles.
- Displacement
- 49cc
- Model years
- 2010
- Models certified
- 23
- Certificates
- 1
What this record says
- Sold in the US by
- Rhon Powersports Usa, Inc.
- Engine built by
- Qingqi Group Ningbo Rhon Motorcycle Co., Ltd.
- Vehicle category
- Highway Motorcycle - Ia (<50cc)
- Certificate numbers
- ARHPC.050SA1-001
What the number itself says
Reading ARHPC.050SA1 left to right: A is the model-year letter for 2010, RHP is the three-character code the EPA assigned to Rhon Powersports Usa as certificate holder, C marks a highway (street-legal) certification, .050 is the displacement in litres, so 50cc and SA1 is Rhon Powersports 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 two-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 2.8 kW (about 4 hp) at 6,500 rpm, driving through an automatic.
- Cylinders / valves
- 1 · 2 per cylinder
- Cycle
- two-stroke
- Fuel delivery
- carburettor
- Oxygen sensor
- no
- Engine control
- ICM
- Catalytic converter
- TWC, single bed, open loop
- Air injection
- PAIR
- Rated power
- 2.8 kW (≈4 hp)
- Rated speed
- 6,500 rpm
- Transmission
- automatic
- Sales area
- 49S
- Vehicle built by
- Qingqi Group Ningbo Rhon Motorcycle Co., Ltd.
- Test vehicle model
- LH50QT-8
Filing history and where it was sold
Rhon Powersports Usa filed one certificate under this family, for model year 2010, sold as 49-state (not certified for sale in California).
The vehicle itself is recorded as built by the same company, Qingqi Group Ningbo Rhon Motorcycle Co., Ltd. in China — engine and chassis from one source.
Certified emission levels: CO 3.0, HC 0.89, NOx 0.11 g/km.
Models certified under ARHPC.050SA1
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.
LH50QT-10 · LH50QT-11 · LH50QT-13 · LH50QT-14 · LH50QT-15 · LH50QT-16 · LH50QT-17 · LH50QT-18 · LH50QT-19 · LH50QT-2 · LH50QT-20 · LH50QT-3 · LH50QT-4 · LH50QT-5A · LH50QT-6 · LH50QT-7 · LH50QT-8 · LH50QT-8A · LH50QT-9 · LH50QT-A · LH50QT-B · LH50QT-C · LH50QT-D
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.