Royal Enfield motorcycle engines
EPA certification records list 55 highway motorcycle engine families from Royal Enfield, model years 2007–2026. Rated power ranges from 15 to 35 kW, median 20 kW. The most families were certified in 2026 (6).
Engine families55
Engine models8
Model years2007–2026
Power range15–35 kWmedian 20 kW
Rank in category#19of 108 makers by families
Power distribution
Number of engine families by rated power.
Families certified per year
Technical mix
Fuel
Gas55
Configuration
455
Cylinders
1 cyl412 cyl14
Most certified engine models
50S22650143508Ren499X-07345024112Ree2Ren499-072
Engine families
| Family | Model | Year | Power | Fuel |
|---|---|---|---|---|
TREEC0.35PJ2 | 350 | 2026 | 15 kW | Gas |
TREEC0.65P3K | 650 | 2026 | 35 kW | Gas |
TREEC0.65P43 | 650 | 2026 | 35 kW | Gas |
TREEC0.65P4A | 650 | 2026 | 35 kW | Gas |
TREEC0.65USA | 650 | 2026 | 35 kW | Gas |
TREEC0452K1G | 450 | 2026 | 29 kW | Gas |
SREEC0.35PJ2 | 350 | 2025 | 15 kW | Gas |
SREEC0.65P3K | 650 | 2025 | 35 kW | Gas |
SREEC0.65P43 | 650 | 2025 | 35 kW | Gas |
SREEC0.65USA | 650 | 2025 | 35 kW | Gas |
SREEC0452K1G | 450 | 2025 | 29 kW | Gas |
RREEC0.35PJ2 | 350 | 2024 | 15 kW | Gas |
RREEC0.65P43 | 650 | 2024 | 35 kW | Gas |
RREEC0.65USA | 650 | 2024 | 35 kW | Gas |
RREEC0411MD1 | 411 | 2024 | 18 kW | Gas |
PREEC0.35PJ1 | 350 | 2023 | 15 kW | Gas |
PREEC0.35PJ2 | 350 | 2023 | 15 kW | Gas |
PREEC0.65USA | 650 | 2023 | 35 kW | Gas |
PREEC0410ELF | 50S | 2023 | 18 kW | Gas |
PREEC0411MD1 | 411 | 2023 | 18 kW | Gas |
NREEC0.35PJ1 | 350 | 2022 | 15 kW | Gas |
NREEC0.35PJ2 | 350 | 2022 | 15 kW | Gas |
NREEC0.65USA | 650 | 2022 | 35 kW | Gas |
NREEC0410ELF | 50S | 2022 | 18 kW | Gas |
MREEC0.35PJ1 | 350 | 2021 | 15 kW | Gas |
MREEC0.50ELF | 50S | 2021 | 20 kW | Gas |
MREEC0.65USA | 650 | 2021 | 35 kW | Gas |
MREEC0410ELF | 50S | 2021 | 18 kW | Gas |
LREEC0.50ELF | 50S | 2020 | 20 kW | Gas |
LREEC0.65USA | 650 | 2020 | 35 kW | Gas |
LREEC0410ELF | 50S | 2020 | 18 kW | Gas |
KREEC0.50ELF | 50S | 2019 | 20 kW | Gas |
KREEC0.65USA | 650 | 2019 | 35 kW | Gas |
KREEC0410ELF | 50S | 2019 | 18 kW | Gas |
JREEC0.50ELF | 50S | 2018 | 20 kW | Gas |
JREEC0410ELF | 50S | 2018 | 18 kW | Gas |
JREEC0535ELF | 50S | 2018 | 20 kW | Gas |
HREEC0.50ELF | 50S | 2017 | 20 kW | Gas |
HREEC0535ELF | 50S | 2017 | 20 kW | Gas |
GREEC0.50ELF | 50S | 2016 | 20 kW | Gas |
GREEC0535ELF | 50S | 2016 | 20 kW | Gas |
FREEC0.50ELF | 50S | 2015 | 20 kW | Gas |
FREEC0535ELF | 50S | 2015 | 20 kW | Gas |
EREEC0.50ELF | 50S | 2014 | 20 kW | Gas |
EREEC0535ELF | 50S | 2014 | 20 kW | Gas |
DREEC0.50ELF | 50S | 2013 | 20 kW | Gas |
CREEC0.50ELF | 50S | 2012 | 20 kW | Gas |
BREEC0.50ELF | 50S | 2011 | 20 kW | Gas |
AREEC0.50ELF | Ree | 2010 | 20 kW | Gas |
9REEC0.50ELF | Ree | 2009 | 20 kW | Gas |
9REEC0.50FKD | Ren499X-07 | 2009 | 17 kW | Gas |
8REEC0.50FKD | Ren499X-07 | 2008 | 17 kW | Gas |
8REEC0.50NFG | Ren499-07 | 2008 | 16 kW | Gas |
7REEC0.50FKD | Ren499X-07 | 2007 | 17 kW | Gas |
7REEC0.50NFG | Ren499-07 | 2007 | 16 kW | Gas |
Other motorcycle engines makers
Source
US Environmental Protection Agency engine certification data. Model year and manufacturer are decoded from EPA engine family codes (EPA codes:REE). 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
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