EPA engine family

Engine family JEGLX.124LYB

If this code is printed on your emission label, this is your machine's federal record: sold under Egl Motor Inc., with an engine built by Yongkang Eagle Motor Co., Ltd.

Displacement: —
Model years: 2018
Models certified: 21
Certificates: 1

What this record says

Sold in the US by: Egl Motor Inc.
Engine built by: Yongkang Eagle Motor Co., Ltd.
Vehicle category: All Terrain Vehicle
Certificate numbers: JEGLX.124LYB-001

What the number itself says

Reading JEGLX.124LYB left to right: J is the model-year letter for 2018, EGL is the three-character code the EPA assigned to Egl Motor as certificate holder, X marks an off-road certification, .124 is the displacement in litres, so 124cc and LYB is Egl 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 test vehicle Egl Motor submitted for this family (model Madix-3) carried engine code 154FMI. In the Chinese engine-model convention that reads as one cylinder with a nominal 54 mm bore, FMI series.

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 6.1 kW (about 8 hp) at 7,000 rpm, driving through a 4-speed manual gearbox.

Engine code on test vehicle: 154FMI
Nominal bore (from the code): 54 mm
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: 6.1 kW (≈8 hp)
Rated speed: 7,000 rpm
Transmission: 4-speed manual gearbox
Sales area: 49S
Vehicle built by: Yongkang Eagle Motor Co., Ltd.
Test vehicle model: Madix-3

Filing history and where it was sold

Egl Motor filed one certificate under this family, for model year 2018, sold as 49-state (not certified for sale in California).

The vehicle itself is recorded as built by the same company, Yongkang Eagle Motor Co., Ltd. in China — engine and chassis from one source.

Certified emission levels: CO 11.8, HC+NOx 0.5 g/km.

What this configuration means when you shop for parts

Egl Motor certified the 154FMI with a carburettor, so the fuel-side wear items are the carburettor, its jets and float needle, the intake boot and the choke. The 54 mm bore in the code gives the engine size, not the carburettor size — measure the intake bore and the mounting on the 154FMI before ordering.

Egl Motor's 2018 the 154FMI drives a manual gearbox, so clutch plates, chain and sprockets wear first — count the sprocket teeth on the Madix-3 before buying a chain.

The PAIR valve Egl Motor lists on the 154FMI is an emissions part; its hoses perish and are the usual cause of popping on the overrun.

The exhaust on Egl Motor's JEGLX.124LYB carries a catalyst, so a replacement silencer without one changes what the 154FMI was certified with.

Other records carrying the same engine code

Egl Motor certified an engine with this code under 9 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 (10 of 164 shown):

Ace Powersports Inc.TACEX.124JYA2026 · different engine factory
Ace Powersports Inc.SACEX.124JYA2025 · different engine factory
Ace Powersports Inc.RACEX.124JYA2024 · different engine factory
Ace Powersports Inc.PACEX.124JYA2023 · different engine factory
Ace Powersports Inc.NACEX.124JYA2022 · different engine factory
Ace Powersports Inc.MACEX.124JYA2021 · different engine factory
Ace Powersports Inc.LACEX.124JYA2020 · different engine factory
Ace Powersports Inc.KACEX.124JYA2019 · different engine factory
Apollo Motorsports Usa, Inc.LAPSX.124VA12020 · different engine factory
Apollo Motorsports Usa, Inc.LAPSX.124BLC2020 · 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 JEGLX.124LYB

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.

DINOSAUR 125 · JP125-1 · MADIX 110 · MADIX 110-1 · MADIX 125 · MADIX 125 PRO · MADIX-21 · Madix-1 · Madix-10 · Madix-11 · Madix-12 · Madix-13 · Madix-14 · Madix-19 · Madix-2 · Madix-20 · Madix-5 · Madix-6 · Madix-7 · Madix-8 · Madix-9

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.