US importer / certificate holder
Who actually makes Yamasaki USA Inc.?
Across every model year on record (2021–2022), Yamasaki USA Inc. engines were built by Chongqing Zongshen.
- Model years
- 2021–2022
- Engine factories
- 1
- Engine families
- 2
- Models certified
- 9
What the Yamasaki USA filings say about the engines
Every Yamasaki USA filing on record is carburetted — 2 certificate rows, 2021 to 2022, and not one fuel-injected engine among them.
The engine codes on Yamasaki USA's test vehicles —just one across the filings — are led by 162FMK. The code is stamped on the crankcase and is a better search term than the badge.
All 2 filings are 50-state certifications, so every one of these machines was certified for sale in California.
Rated power on the record is 9 kW (about 12 hp).
The vehicle builder named on every row is Changzhou Yamasaki Motorcycle 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
Chongqing Zongshen
Also builds engines for 24 other American brands. See the full list
Model names certified under Yamasaki USA Inc.
9 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.
YM170-10 · YM170-11 · YM170-12 · YM170-F1 · YM170-F6 · YM170-H6 · YM170-K1 · YM170-M2 · YM170-R6
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 2 China-engine certificate rows filed by Yamasaki USA Inc.. Full provenance and method.