Engines

Motorcycle engines

Engines certified for highway motorcycles. EPA certification records cover 6,035 engine families from 108 manufacturers; Honda has the most, with 497.

Manufacturers108
Engine families6,035
ManufacturerFamiliesModel yearsPower range
Honda4972006–20273–141 kW
Yamaha4552006–20272–147 kW
Piaggio4372006–20271–161 kW
Kawasaki4252006–20277–170 kW
Suzuki3822007–202710–145 kW
Ducati3272006–202730–158 kW
Triumph Motorcycles2362007–202729–134 kW
Harley-Davidson2112007–202617–126 kW
KTM1992006–202718–140 kW
Kymco1872006–20271–44 kW
BMW1712007–202625–151 kW
Genuine Scooters1122007–20272–20 kW
American Lifan902007–20262–32 kW
MV Agusta852009–202670–153 kW
CFMOTO Powersports712007–20277–83 kW
Pacific Rim International West672009–20262–14 kW
Amstar Motors652009–20262–14 kW
Value Group Enterprises622012–20232–50 kW
Royal Enfield552007–202615–35 kW
Peace Industry Group522007–20252–13 kW
Alliance Powersports492012–20253–27 kW
Indian Motorcycle482009–202660–123 kW
JMStar Powersports482007–20152–13 kW
Lance Powersports472009–20252–9 kW
BRP (Bombardier Recreational Products)462008–202737–85 kW
Tao Motor462016–20262–11 kW
Carter Brothers452006–20112–17 kW
Hua Mei Motor422023–20262–68 kW
Boom International Holdings412014–20262–12 kW
Hammer Brand402009–20262–6 kW
Dongfang Motor392010–20262–15 kW
KRM392006–20173–60 kW
Seidner Ventures372010–20268–52 kW
S&S Cycle352007–202268–102 kW
Jili Scooter Import342013–20262–13 kW
Yuluo Global Motor302015–20252–24 kW
Beta302008–202411–39 kW
Qlink-Keeway272008–20132–17 kW
QJ Motor262023–20268–73 kW
BMS Motorsports262009–20252–6 kW
Jonway Motorcycle262006–20122–208 kW
Jiajue252012–20262–8 kW
Hidria252006–20142–7 kW
Motofino252007–20132–12 kW
Benyate Motorsport242022–20262–16 kW
The Campagna232007–202692–155 kW
Titan Imports232007–20252–18 kW
Keeway232008–20133–13 kW
Westward Industries222006–20257–68 kW
Dafier222006–20152–14 kW
Rage Hard Choppers222006–201252–81 kW
Husqvarna Motorcycles212009–20148–42 kW
Jason Sky212008–20172–11 kW
Xingyue212007–20102–20 kW
Irbit Motorworks192007–202530–30 kW
Linhai192008–20252–17 kW
Victory Motorcycles192007–201762–104 kW
Chicago Scooter182016–20262–13 kW
Tmec Power182009–20182–10 kW
Chuanl182006–20122–11 kW
Bashan Motorcycle172009–20262–10 kW
Taotao172009–20172–6 kW
Shanghai Xingyue172009–20167–20 kW
Tank Sports172006–20092–24 kW
Buell Motorcycle162006–201025–109 kW
Jolly Motor162020–20262–10 kW
Ricky Power Sports162019–20268–20 kW
Amigo Motorsports162020–20263–8 kW
GST Motor162022–20262–8 kW
Yiying Motorcycle162009–20152–14 kW
Eton162007–20112–8 kW
FYM Group162007–20092–12 kW
Cagiva162006–200812–140 kW
Paragon Motorcycles152018–202610–22 kW
Rokon International152012–20265–5 kW
Erik Buell Racing152012–2026128–130 kW
Cobra Scooters152009–20132–13 kW
MOD Cycles152006–20103–11 kW
Wansen Motor142019–20272–16 kW
KJack Motors142010–20199–15 kW
Wangye142009–20172–24 kW
Big Dog Motorcycles142007–201158–76 kW
Zongshen142007–20092–14 kW
Rewaco132013–202685–103 kW
Flywing Motor American132023–20262–9 kW
Leikestar132015–20252–6 kW
Puma Cycles132009–20132–10 kW
Italica Motors122007–20263–18 kW
Polaris122015–2026173–204 kW
Morgan122012–202580–90 kW
Ultima122007–201878–78 kW
DCI Motor122011–20182–6 kW
Tomoto Industries122007–20103–13 kW
Daelim Motor122006–20082–12 kW
Qianjiang112006–20092–12 kW
Arch Motorcycle112016–2026102–102 kW
Bintelli112013–20182–6 kW
Motobravo112009–20142–13 kW
Wildfire Motors112006–20117–72 kW
QP-Sports112007–20106–12 kW
United Motors112007–20093–57 kW
Zhiwei Motorcycle102017–20262–8 kW
Jiangsu SACIN102011–20242–6 kW
Sigma Moto102011–20244–10 kW
Panther Motors102008–20183–7 kW
Viper Motorcycle102009–201387–96 kW
Boss Hoss Cycles102007–2011265–425 kW
Saxon Motorcycle102007–201068–81 kW

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

All calculators →

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