Shared-engine cohort
Chongqing Zongshen 49-50cc: the American badges sharing this engine
5 American brands certified 49-50cc machines built by Chongqing Zongshen between 2008–2027 — street-legal scooters and motorcycles, off-road machines. These are the machines most likely to share components with yours.
- American badges
- 5
- Model years
- 2008–2027
- Exact displacements
- 49–50cc
- Engine families
- 35
Every badge in this cohort
| American brand | Years in this cohort | Models certified |
|---|---|---|
| Amstar Motor Corporation | 2018–2019 | 52 |
| Baja Inc. | 2011–2013 | 83 |
| Piaggio Group Americas, Inc. | 2013–2027 | 25 |
| XMotos Usa, Inc. | 2016 | 161 |
| Zongshen Inc. | 2008–2009 | 13 |
The strongest matches: same factory, same size, same year
In these model years, two or more American brands certified 49-50cc machines from Chongqing Zongshen simultaneously. Machines built alongside each other are the most likely to share components — though still not guaranteed to.
| Model year | Brands certified that year |
|---|---|
| 2019 | Amstar Motor Corporation · Piaggio Group Americas, Inc. |
| 2018 | Amstar Motor Corporation · Piaggio Group Americas, Inc. |
| 2016 | Piaggio Group Americas, Inc. · XMotos Usa, Inc. |
| 2013 | Baja Inc. · Piaggio Group Americas, Inc. |
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. Full provenance and method.