Engine family NSWYX.567SGA

What this record says

Sold in the US by

Segway Powersports Inc.

Engine built by

Segway Technology Co., Ltd.

Vehicle category

ATVA-Meet EPA & ARB ATV Definition

Certificate numbers

NSWYX.567SGA-001

What the number itself says

Reading NSWYX.567SGA left to right: N is the model-year letter for 2022, SWY is the three-character code the EPA assigned to Segway Powersports as certificate holder, X marks an off-road certification, .567 is the displacement in litres, so 567cc and SGA is Segway Powersports' 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 Segway Powersports submitted for this family (model SGW570F-A4) carried engine code 199MS. In the Chinese engine-model convention that reads as one cylinder with a nominal 99 mm bore, MS series. Against the certified 567cc that implies a stroke of roughly 74 mm — a sanity check for a piston or cylinder listing, not a published figure.

The certificate describes a four-stroke, single-cylinder engine with 4 valves per cylinder fed by direct fuel injection, with an oxygen sensor for closed-loop fuelling, run by an engine control module (ECM). There is a catalytic converter in the exhaust, recorded as "Three Way Catalyst (TWC), single-bed, closed-loop warm up".

Rated power on the record is 32.5 kW (about 44 hp) at 7,000 rpm, driving through a CVT (belt and variator).

Engine code on test vehicle

199MS

Nominal bore (from the code)

99 mm · implied stroke ≈ 74 mm

Cylinders / valves

1 · 4 per cylinder

Cycle

four-stroke

Fuel delivery

direct fuel injection

Oxygen sensor

yes (closed loop)

Engine control

ECM

Catalytic converter

Three Way Catalyst (TWC), single-bed, closed-loop warm up

Rated power

32.5 kW (≈44 hp)

Rated speed

7,000 rpm

Transmission

CVT (belt and variator)

Sales area

49S

Vehicle built by

Segway Technology Co., Ltd.

Test vehicle model

SGW570F-A4

Filing history and where it was sold

Segway Powersports filed one certificate under this family, for model year 2022, sold as 49-state (not certified for sale in California).

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

Certified emission levels: CO 2.1, HC 0.2, HC+NOx 0.7 g/km.

Other records carrying the same engine code

Segway Powersports 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:

• MSWYX.567SGA (2021)
• PSWYX.567ATA (2023)
• PSWYX.567SGA (2023)
• RSWYX.567ATA (2024)
• RSWYX.567SGA (2024)
• SSWYX.567ATA (2025)
• SSWYX.567SGA (2025)
• TSWYX.567ATA (2026)
• TSWYX.567SGA (2026)

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 NSWYX.567SGA

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.

Snarler 570L · Snarler 570LE · Snarler 570LP · Snarler 570LX · Snarler 570S · Snarler 570SE · Snarler 570SN · Snarler 570SX · Snarler 570X · Snarler 570XE · Snarler 570XP · Snarler AT6 L · Snarler AT6 LE · Snarler AT6 LX · Snarler AT6 S · Snarler AT6 SE · Snarler AT6 SX