Who makes Rato Usa, LLC engines?

Rato Usa, LLC engines were built by 2 different Chinese factories across 2009–2011: Chongqing Rato Power Co., Ltd., Chongqing Zongshen. Which one built yours depends on the model year.

Will parts from another brand fit my Rato Usa, LLC?

A shared factory and engine size makes another brand a strong candidate, but it does not prove the part numbers match. These machines are assembled from multiple component suppliers, so measure the part you have before ordering a replacement.

US importer / certificate holder

Who actually makes Rato Usa, LLC?

Rato Usa, LLC did not use one factory. Across 2009–2011 the engines came from 2 different Chinese manufacturers — so the answer depends on your model year.

Model years: 2009–2011
Engine factories: 2
Engine families: 8
Models certified: 11

The factory changed. Here is when.

Engine manufacturer by model year, from the certification record
Model year	Engine factory on the certificate
2011	Chongqing Rato Power Co., Ltd. · Chongqing Zongshen
2010	Chongqing Rato Power Co., Ltd. · Chongqing Zongshen
2009	Chongqing Rato Power Co., Ltd.

Other American badges on the same engines

These machines came out of the same factory at the same engine size. If Rato Usa, LLC parts are hard to find, these are where to look next — after measuring.

Chongqing Rato Power Co., Ltd. · 200ccBaja Inc.

Model names certified under Rato Usa, LLC

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

RT125ST · RT125ST-2 · RT125ST-3 · RT150ST · RT150ST-2 · RT150ST-3 · RT200GS · RT250GS · RT250ST · RT250ST-2 · RT250ST-3

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 8 China-engine certificate rows filed by Rato USA, LLC. Full provenance and method.