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The Scooter Parts Registry

EPA engine family

Engine family TBMHC.150MTA

If this code is printed on your emission label, this is your machine's federal record: sold under Boom International Holdings (Usa), Inc., with an engine built by Taizhou Xinba Power Manufacturing Co., Ltd, certified as street-legal scooters and motorcycles.

Displacement
149.6cc
Model years
2026
Models certified
15
Certificates
1

What this record says

Sold in the US by
Boom International Holdings (Usa), Inc.
Engine built by
Taizhou Xinba Power Manufacturing Co., Ltd.
Vehicle category
Highway Motorcycle - Ib (50-169cc)
Certificate numbers
TBMHC.150MTA-003

What the number itself says

Reading TBMHC.150MTA left to right: T is the model-year letter for 2026, BMH is the three-character code the EPA assigned to Boom International Holdings (Usa) as certificate holder, C marks a highway (street-legal) certification, .150 is the displacement in litres, so 150cc and MTA is Boom International Holdings (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 Boom International Holdings (Usa) submitted for this family (model BD150T-8) carried engine code 1P57QMJ. In the Chinese engine-model convention that reads as one cylinder, horizontal (flat) cylinder, with a nominal 57 mm bore, QMJ series. Against the certified 149.6cc 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 kW (about 8 hp) at 7,000 rpm, driving through a CVT (belt and variator).

Engine code on test vehicle
1P57QMJ
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 kW (≈8 hp)
Rated speed
7,000 rpm
Transmission
CVT (belt and variator)
Sales area
49S
Vehicle built by
Jiangsu Baodiao Locomotive Co., Ltd.
Test vehicle model
BD150T-8

Filing history and where it was sold

Boom International Holdings (Usa) filed one certificate under this family, for model year 2026, sold as 49-state (not certified for sale in California).

The vehicle itself is recorded as built by Jiangsu Baodiao Locomotive Co., Ltd. in China, while the engine came from Taizhou Xinba Power Manufacturing Co., Ltd. Chassis parts and engine parts therefore have different origins.

Certified emission levels: CO 0.8, HC 0.2 g/km.

Other records carrying the same engine code

Boom International Holdings (Usa) 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:

Other certificate holders whose test vehicle carried the same engine code (10 of 75 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 TBMHC.150MTA

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.

BD150T-10 · BD150T-11 · BD150T-12 · BD150T-15 · BD150T-16 · BD150T-17 · BD150T-18 · BD150T-2 · BD150T-3 · BD150T-4 · BD150T-5 · BD150T-6 · BD150T-7 · BD150T-8 · BD150T-9

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.