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The Scooter Parts Registry

US certificate holder — partial coverage

Which National Motor Manufacturing models have a Chinese-built engine?

1 of the 16 certificate filings on record for National Motor Manufacturing, Inc. name a China-built engine. This page covers only those, and says nothing about the rest of the range.

Model years
2008
Engine factories
1
Engine families
1
Coverage
1 of 16 filings

What the National Motor Manufacturing filings say about the engines

Every National Motor Manufacturing filing on record is carburetted — 1 certificate row, 2008, and not one fuel-injected engine among them.

The engine codes on National Motor Manufacturing's test vehicles —just one across the filings — are led by NMRX-300. The code is stamped on the crankcase and is a better search term than the badge.

All 1 filings are 50-state certifications, so every one of these machines was certified for sale in California.

Rated power on the record is 14.7 kW (about 20 hp).

The vehicle builder named on every row is NATIONAL MOTOR CO, LTD.

Each figure is read straight off the EPA certificate rows; the per-family pages below carry the full breakdown for every engine family.

The factory behind the China-engine models

  • National Motor Co, Ltd

    Also builds engines for 0 other American brands.

Model names certified under National Motor Manufacturing, Inc.

1 distinct model designations appear on this brand's China-engine certificates. Yours should be among them — importers sometimes market a machine under a different name than the one they certified.

X-300

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. Based on the 1 China-engine rows among 16 certificate rows filed by National Motor Manufacturing, Inc.. Non-China filings are out of scope. Full provenance and method.