Engine family SNTIX.495XN1

What this record says

Sold in the US by

Niu Technology Inc.

Engine built by

Jiangsu Niu Electric Technology Co., Ltd.

Vehicle category

All Terrain Vehicle

Certificate numbers

SNTIX.495XN1-001

What the number itself says

Reading SNTIX.495XN1 left to right: S is the model-year letter for 2025, NTI is the three-character code the EPA assigned to Niu Technology as certificate holder, X marks an off-road certification, .495 is the displacement in litres, so 495cc and XN1 is Niu Technology'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 certificate describes a four-stroke, single-cylinder engine with 4 valves per cylinder fed by throttle-body 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 28 kW (about 38 hp) at 6,800 rpm, driving through a CVT (belt and variator).

Cylinders / valves

1 · 4 per cylinder

Cycle

four-stroke

Fuel delivery

throttle-body fuel injection

Oxygen sensor

yes (closed loop)

Engine control

ECM

Catalytic converter

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

Rated power

28 kW (≈38 hp)

Rated speed

6,800 rpm

Transmission

CVT (belt and variator)

Sales area

49S

Vehicle built by

JIANGSU NIU ELECTRIC TECHNOLOGY CO., LTD.

Test vehicle model

NP500A-A2

Filing history and where it was sold

Niu Technology filed one certificate under this family, for model year 2025, sold as 49-state (not certified for sale in California).

The vehicle itself is recorded as built by the same company, JIANGSU NIU ELECTRIC TECHNOLOGY CO., LTD. in China — engine and chassis from one source.

Certified emission levels: CO 2.6, HC 0.3, HC+NOx 0.7 g/km.

Models certified under SNTIX.495XN1

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.

NIUNV 500 L · NIUNV 500 LE · NIUNV 500 LP · NIUNV 500 LU · NIUNV 500 LX · NIUNV 500 S · NIUNV 500 SE · NIUNV 500 SP · NIUNV 500 SU · NIUNV 500 SX · NIUNV 525 L · NIUNV 525 LE · NIUNV 525 LP · NIUNV 525 LU · NIUNV 525 LX · NIUNV 525 LXP · NIUNV 525 S · NIUNV 525 SE · NIUNV 525 SP · NIUNV 525 SU · NIUNV 525 SX