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The Scooter Parts Registry

EPA engine family

Engine family TFMAC.150MCB

If this code is printed on your emission label, this is your machine's federal record: sold under Flywing Motor American Co.,Ltd, with an engine built by Juneng Motorcycle, certified as street-legal scooters and motorcycles.

Displacement
150cc
Model years
2026
Models certified
30
Certificates
1

What this record says

Sold in the US by
Flywing Motor American Co.,Ltd
Engine built by
Juneng Motorcycle
Vehicle category
Highway Motorcycle - Ib (50-169cc)
Certificate numbers
TFMAC.150MCB-001

What the number itself says

Reading TFMAC.150MCB left to right: T is the model-year letter for 2026, FMA is the three-character code the EPA assigned to Flywing Motor American as certificate holder, C marks a highway (street-legal) certification, .150 is the displacement in litres, so 150cc and MCB is Flywing Motor American'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 Flywing Motor American submitted for this family (model JN150T-10B) carried engine code JJ157QMJ. In the Chinese engine-model convention that reads as one cylinder with a nominal 57 mm bore, QMJ series. Against the certified 150cc that implies a stroke of roughly 59 mm — a sanity check for a piston or cylinder listing, not a published figure.

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".

Rated power on the record is 6.1 kW (about 8 hp) at 7,500 rpm, driving through a CVT (belt and variator).

Engine code on test vehicle
JJ157QMJ
Nominal bore (from the code)
57 mm · implied stroke ≈ 59 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
Rated power
6.1 kW (≈8 hp)
Rated speed
7,500 rpm
Transmission
CVT (belt and variator)
Sales area
50S
Vehicle built by
Juneng Motorcycle Technology Co., Ltd
Test vehicle model
JN150T-10B

Filing history and where it was sold

Flywing Motor American filed one certificate under this family, for model year 2026, sold as 50-state, California included.

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

Certified emission levels: CO 6.8, HC 0.3 g/km.

Other records carrying the same engine code

Flywing Motor American certified an engine with this code under 6 other family numbers — the same engine filed again in another year, or in an off-road and a street version:

  • PFMAC.150MCA (2023)
  • RFMAC.150MCA (2024)
  • RFMAC.150MCB (2024)
  • SFMAC.150MCA (2025)
  • SFMAC.150MCB (2025)
  • TFMAC.150MCA (2026)

Other certificate holders whose test vehicle carried the same engine code (10 of 16 shown):

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 TFMAC.150MCB

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.

Arron 150 · Arron naked 150 · BESO R 150 · BWS IV 150 · Bravo 150 · CONTRA 150 · Cappucino 150 · Cappucino S+ 150 · Cappucino V 150 · Eurostar 150 · Flamenco 150 · Flamenco New 150 · JOC 150 · Jog II 150 · Jog III 150 · Martrix 150 · Modstar 150 · Mojito S 150 · N-Tiger 150 · Princesa 150 · RAZOR 150 · Racestar 150 · Retrostar 150 · SCOOTY 150 · Shadowstar 150 · Shiny 150 · Speedo 150 · Tank II 150 · Versilia 150 · Whistle 150

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.