Engines · Off-road motorcycles, ATVs and UTVs
Rokon International off-road motorcycles, atvs and utvs
EPA certification records list 20 off-road motorcycle, ATV and UTV engine families from Rokon International, model years 2007–2026. Rated power ranges from 4 to 5 kW, median 5 kW. Displacement spans 171 cc to 208 cc. The most families were certified in 2026 (1).
Engine families20
Engine models3
Model years2007–2026
Power range4–5 kWmedian 5 kW
Displacement171 cc – 208 cc
Rank in category#55of 99 makers by families
Families certified per year
Technical mix
Fuel
Gas20
Configuration
420
Cylinders
1 cyl20
Most certified engine models
Ch27012Inc. Scout, Trail-Breaker7Ch21
Engine families
| Family | Model | Year | Displacement | Power | Fuel |
|---|---|---|---|---|---|
TRKNX.208OHM | Ch270 | 2026 | 208 cc | 5 kW | Gas |
SRKNX.208OHM | Ch270 | 2025 | 208 cc | 5 kW | Gas |
RRKNX.208OHM | Ch270 | 2024 | 208 cc | 5 kW | Gas |
PRKNX.208OHM | Ch270 | 2023 | 208 cc | 5 kW | Gas |
NRKNX.208OHM | Ch270 | 2022 | 208 cc | 5 kW | Gas |
MRKNX.208OHM | Ch270 | 2021 | 208 cc | 5 kW | Gas |
LRKNX.208TBZ | Ch270 | 2020 | 208 cc | 5 kW | Gas |
KRKNX.208TBZ | Ch270 | 2019 | 208 cc | 5 kW | Gas |
JRKNX.208TBZ | Ch270 | 2018 | 208 cc | 5 kW | Gas |
HRKNX.208TBZ | Ch270 | 2017 | 208 cc | 5 kW | Gas |
GRKNX.208TBZ | Ch270 | 2016 | 208 cc | 5 kW | Gas |
FRKNX.208TBZ | Ch270 | 2015 | 208 cc | 5 kW | Gas |
ERKNX.208TBZ | Ch2 | 2014 | 208 cc | 5 kW | Gas |
DRKNX.208TBZ | Inc. Scout, Trail-Breaker | 2013 | 208 cc | 5 kW | Gas |
CRKNX.208TBZ | Inc. Scout, Trail-Breaker | 2012 | 208 cc | 5 kW | Gas |
BRKNX.172KLR | Inc. Scout, Trail-Breaker | 2011 | 171 cc | 4 kW | Gas |
ARKNX.172KLR | Inc. Scout, Trail-Breaker | 2010 | 171 cc | 4 kW | Gas |
9RKNX.172KLR | Inc. Scout, Trail-Breaker | 2009 | 171 cc | 4 kW | Gas |
8RKNX.172KLR | Inc. Scout, Trail-Breaker | 2008 | 171 cc | 4 kW | Gas |
7RKNX.172KLR | Inc. Scout, Trail-Breaker | 2007 | 171 cc | 4 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:RKN). 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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