Engines · Off-road motorcycles, ATVs and UTVs
Sunyee Sports off-road motorcycles, atvs and utvs
EPA certification records list 35 off-road motorcycle, ATV and UTV engine families from Sunyee Sports, model years 2017–2026. Rated power ranges from 6 to 11 kW, median 7 kW. Displacement spans 124 cc to 223 cc. The most families were certified in 2025 (5).
Engine families35
Engine models4
Model years2017–2026
Power range6–11 kWmedian 7 kW
Displacement124 cc – 223 cc
Rank in category#33of 99 makers by families
Families certified per year
Technical mix
Fuel
Gas35
Configuration
435
Cylinders
1 cyl35
Most certified engine models
154Fmi12Lc166Fmm10157Qmj-B291P63Qmk4
Engine families
| Family | Model | Year | Displacement | Power | Fuel |
|---|---|---|---|---|---|
TSYSX.125DBA | 154Fmi | 2026 | 124 cc | 6 kW | Gas |
TSYSX.125THA | 154Fmi | 2026 | 124 cc | 6 kW | Gas |
TSYSX.177ECA | 1P63Qmk | 2026 | 177 cc | 7 kW | Gas |
TSYSX.223FMM | Lc166Fmm | 2026 | 223 cc | 11 kW | Gas |
SSYSX.125DBA | 154Fmi | 2025 | 124 cc | 6 kW | Gas |
SSYSX.125THA | 154Fmi | 2025 | 124 cc | 6 kW | Gas |
SSYSX.150THY | 157Qmj-B2 | 2025 | 149 cc | 7 kW | Gas |
SSYSX.177ECA | 1P63Qmk | 2025 | 177 cc | 7 kW | Gas |
SSYSX.223FMM | Lc166Fmm | 2025 | 223 cc | 11 kW | Gas |
RSYSX.125DBA | 154Fmi | 2024 | 124 cc | 6 kW | Gas |
RSYSX.125THA | 154Fmi | 2024 | 124 cc | 6 kW | Gas |
RSYSX.150THY | 157Qmj-B2 | 2024 | 150 cc | 7 kW | Gas |
RSYSX.177ECA | 1P63Qmk | 2024 | 177 cc | 7 kW | Gas |
RSYSX.223FMM | Lc166Fmm | 2024 | 223 cc | 11 kW | Gas |
PSYSX.125DBA | 154Fmi | 2023 | 124 cc | 6 kW | Gas |
PSYSX.125THA | 154Fmi | 2023 | 124 cc | 6 kW | Gas |
PSYSX.150THY | 157Qmj-B2 | 2023 | 150 cc | 7 kW | Gas |
PSYSX.177ECA | 1P63Qmk | 2023 | 177 cc | 7 kW | Gas |
PSYSX.223FMM | Lc166Fmm | 2023 | 223 cc | 11 kW | Gas |
NSYSX.125DBA | 154Fmi | 2022 | 124 cc | 6 kW | Gas |
NSYSX.125THA | 154Fmi | 2022 | 124 cc | 6 kW | Gas |
NSYSX.150THY | 157Qmj-B2 | 2022 | 150 cc | 7 kW | Gas |
NSYSX.223FMM | Lc166Fmm | 2022 | 223 cc | 11 kW | Gas |
MSYSX.125DBA | 154Fmi | 2021 | 124 cc | 6 kW | Gas |
MSYSX.150THY | 157Qmj-B2 | 2021 | 150 cc | 7 kW | Gas |
MSYSX.223FMM | Lc166Fmm | 2021 | 223 cc | 11 kW | Gas |
LSYSX.125THA | 154Fmi | 2020 | 124 cc | 6 kW | Gas |
LSYSX.150THY | 157Qmj-B2 | 2020 | 150 cc | 7 kW | Gas |
LSYSX.223FMM | Lc166Fmm | 2020 | 223 cc | 11 kW | Gas |
KSYSX.150THY | 157Qmj-B2 | 2019 | 150 cc | 7 kW | Gas |
KSYSX.223FMM | Lc166Fmm | 2019 | 223 cc | 11 kW | Gas |
JSYSX.150THY | 157Qmj-B2 | 2018 | 150 cc | 7 kW | Gas |
JSYSX.223FMM | Lc166Fmm | 2018 | 223 cc | 11 kW | Gas |
HSYSX.150THY | 157Qmj-B2 | 2017 | 150 cc | 7 kW | Gas |
HSYSX.223FMM | Lc166Fmm | 2017 | 223 cc | 11 kW | Gas |
Other off-road motorcycles, atvs and utvs makers
Source
US Environmental Protection Agency engine certification data. Model year and manufacturer are decoded from EPA engine family codes (EPA codes:SYS). An engine family is a group of engines certified together; one family can cover several power ratings.
Engine calculators
Torque, power and BMEPPower from torque and RPM · Torque from power and RPM · Brake mean effective pressure (BMEP)Engine displacementDisplacement from bore, stroke and cylinders · Bore from displacement and stroke · Stroke from displacement and boreBSFC and thermal efficiencyBSFC from power and fuel flow · Fuel flow from power and BSFC · Thermal efficiency from BSFCCompression ratioStatic compression ratio · Chamber volume for a target compression ratio · Theoretical compression pressurePiston speedMean piston speed · Maximum RPM for a piston speed limit · Rod ratio, piston velocity and acceleration
Related pages
- Buffalo Powersports off-road motorcycles, atvs and utvs Engines
- Telee Motor off-road motorcycles, atvs and utvs Engines
- KT Powersports off-road motorcycles, atvs and utvs Engines
- Tao Motor off-road motorcycles, atvs and utvs Engines
- Powersports Powersports
- Off-road motorcycles, ATVs and UTVs: Under 100 cc Powersports
- KXD Motor off-road motorcycles, atvs and utvs Engines