EPA engine family

Engine family PRAYX.199CR4

If this code is printed on your emission label, this is your machine's federal record: sold under Raytech USA LLC, with an engine built by Juneng Motorcycle.

Displacement: —
Model years: 2023
Models certified: 21
Certificates: 1

What this record says

Sold in the US by: Raytech USA LLC
Engine built by: Juneng Motorcycle
Vehicle category: All Terrain Vehicle
Certificate numbers: PRAYX.199CR4-001

What the number itself says

Reading PRAYX.199CR4 left to right: P is the model-year letter for 2023, RAY is the three-character code the EPA assigned to Raytech USA as certificate holder, X marks an off-road certification, .199 is the displacement in litres, so 199cc and CR4 is Raytech 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 test vehicle Raytech USA submitted for this family (model GKA250-1) carried engine code 1P65YML. In the Chinese engine-model convention that reads as one cylinder, horizontal (flat) cylinder, with a nominal 65 mm bore, YML series.

The certificate describes a four-stroke, single-cylinder engine with 2 valves per cylinder fed by carburettor. 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 9.3 kW (about 12 hp) at 7,000 rpm, driving through a CVT (belt and variator).

Engine code on test vehicle: 1P65YML
Nominal bore (from the code): 65 mm
Cylinders / valves: 1 · 2 per cylinder
Cycle: four-stroke
Fuel delivery: carburettor
Oxygen sensor: no
Engine control: other
Catalytic converter: TWC, single bed, open loop
Air injection: PAIR
Rated power: 9.3 kW (≈12 hp)
Rated speed: 7,000 rpm
Transmission: CVT (belt and variator)
Sales area: 49S
Vehicle built by: Raytech (Qingdao) Power Science and Technology Co., Ltd.
Test vehicle model: GKA250-1

Filing history and where it was sold

Raytech USA filed one certificate under this family, for model year 2023, sold as 49-state (not certified for sale in California).

The vehicle itself is recorded as built by Raytech (Qingdao) Power Science and Technology Co., Ltd. in China, while the engine came from Juneng Motorcycle. Chassis parts and engine parts therefore have different origins.

Certified emission levels: CO 6.3, HC 0.4, HC+NOx 1.0 g/km.

What this configuration means when you shop for parts

Raytech USA certified the 1P65YML with a carburettor, so the fuel-side wear items are the carburettor, its jets and float needle, the intake boot and the choke. The 65 mm bore in the code gives the engine size, not the carburettor size — measure the intake bore and the mounting on the 1P65YML before ordering.

The CVT behind the 1P65YML makes its drive belt, variator rollers and clutch shoes the consumables, so measure the old belt on the GKA250-1 rather than ordering by displacement.

The PAIR valve Raytech USA lists on the 1P65YML is an emissions part; its hoses perish and are the usual cause of popping on the overrun.

The exhaust on Raytech USA's PRAYX.199CR4 carries a catalyst, so a replacement silencer without one changes what the 1P65YML was certified with.

Other records carrying the same engine code

Raytech USA certified an engine with this code under 4 other family numbers — the same engine filed again in another year, or in an off-road and a street version:

Other certificate holders whose test vehicle carried the same engine code:

Fang Power Inc.NFNGX.232SWC2022 · same engine factory
Fang Power Inc.MFNGX.232SWC2021 · same engine factory
Fang Power Inc.LFNGX.232SWC2020 · same engine factory
Fang Power Inc.TFNGX.232ATA2026 · different engine factory
Fang Power Inc.SFNGX.232ATA2025 · different engine factory
Fang Power Inc.RFNGX.232ATA2024 · different engine factory

A shared code from the same factory is a strong search lead. From a different factory it is as often a naming coincidence. Either way it narrows the search; it does not settle it — measure before you buy.

Models certified under PRAYX.199CR4

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.

CT200-1 · CT200-2 · CT200-3 · CT200-4 · CT200-5 · CT200-6 · CT200-7 · CT200-9 · CT200-A · CT200-B · CT250-1 · CT250-4 · CT250-7 · CT250-A · CT250-B · CT250-C · GKA200-1 · GKA250-1 · UTV200-1 · UTV250-2 · UTV250-3

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.