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The Scooter Parts Registry

EPA engine family

Engine family MBMSC0.15MC1

If this code is printed on your emission label, this is your machine's federal record: sold under BMS Motorsports, Inc., with an engine built by Taizhou Zhongneng (ZNEN), certified as street-legal scooters and motorcycles.

Displacement
150cc
Model years
2021
Models certified
16
Certificates
1

What this record says

Sold in the US by
BMS Motorsports, Inc.
Engine built by
Taizhou Zhongneng (ZNEN)
Vehicle category
Highway Motorcycle - Ib (50-169cc)
Certificate numbers
MBMSC0.15MC1-001

The engine, as described on the certificate

The test vehicle BMS Motorsports submitted for this family (model R8 150) carried engine code BN157QMJ. 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". The head carries a pulse secondary-air (PAIR) valve.

Rated power on the record is 6.2 kW (about 8 hp) at 7,500 rpm, driving through a CVT (belt and variator).

Engine code on test vehicle
BN157QMJ
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
Air injection
PAIR
Rated power
6.2 kW (≈8 hp)
Rated speed
7,500 rpm
Transmission
CVT (belt and variator)
Sales area
50S
Vehicle built by
Taizhou Zhongneng Motorcycle Co.,Ltd.
Test vehicle model
R8 150

Filing history and where it was sold

BMS Motorsports filed one certificate under this family, for model year 2021, sold as 50-state, California included.

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

Certified emission levels: CO 10.1, HC 0.3 g/km.

Other records carrying the same engine code

BMS Motorsports certified an engine with this code under 16 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 59 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 MBMSC0.15MC1

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.

Astro 150 · BeMine 150 XT · BeMine150 · Breezys 150 · CONCEPT 150 · Cavalier 150 LX · Chelsea 150 · Heritage 150 · Kerrigan T-150 · Palazzo 150 · Premier 150 · Prestige 150 · Roman 150 · The Legend 150 · Tuscan 150 · Valkyrie150

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.