EPA engine family
Engine family RHSNX.546EU2
If this code is printed on your emission label, this is your machine's federal record: sold under Hisun Motors Corp., U.S.A., with an engine built by Chongqing Huansong, certified as ATVs and UTVs and side-by-sides.
- Displacement
- —
- Model years
- 2024
- Models certified
- 23
- Certificates
- 1
What this record says
- Sold in the US by
- Hisun Motors Corp., U.S.A.
- Engine built by
- Chongqing Huansong
- Vehicle category
- ATVB & UTV - EPA only
- Certificate numbers
- RHSNX.546EU2-015
Models certified under RHSNX.546EU2
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.
Axis 500 · Axis 550 · Bad Boy 550 · Big Dirty 500 · Big Dirty 550 · Challenger 500 · Challenger 550 · Challenger M550 · Challenger MX 550 · HS500UTV-3 · HS500UTV-4 · HS500UTV-5 · HS500UTV-6 · HS550UTV · HS550UTV-2 · HS550UTV-3 · HS550UTV-4 · RK Performance 550 · Sector 550 · Strike 550 · Strike 550R · Vector 500 · Vector 550
Other American badges on engines from the same factory
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.