Engines · Motorcycle engines

Harley-Davidson motorcycle engines

EPA certification records list 211 highway motorcycle engine families from Harley-Davidson, model years 2007–2026. Rated power ranges from 17 to 126 kW, median 69 kW. The most families were certified in 2025 (14).

Engine families211
Engine models46
Model years2007–2026
Power range17–126 kWmedian 69 kW
Rank in category#8of 108 makers by families

Power distribution

Number of engine families by rated power.

0–19 kW3
19–37 kW10
37–56 kW33
56–75 kW96
75–130 kW69

Families certified per year

20076
20088
200912
20108
20117
20127
20137
20148
201511
201611
201712
201813
201913
202013
202113
202213
202313
202413
202514
20269

Technical mix

Fuel
Gas211
Configuration
4211
Cylinders
2 cyl211

Most certified engine models

168816K15Cvo14P-412P1117469Rev9S7H725162725115746

Engine families — latest 150

FamilyModelYearPowerFuel
THDXC0.98AGL1202667 kWGas
THDXC1.25AFK4202690 kWGas
THDXC1.25AFNS2026111 kWGas
THDXC1.92AJM7202678 kWGas
THDXC1.92ALH9202677 kWGas
THDXC1.92ALK9202673 kWGas
THDXC1.98AHM6202686 kWGas
THDXC1.98AKM8202695 kWGas
THDXC1.98DHM6202685 kWGas
SHDXC0.35BPSW4202517 kWGas
SHDXC0.98AGL1202567 kWGas
SHDXC1.25AFJS2025112 kWGas
SHDXC1.25AFK4202590 kWGas
SHDXC1.25AFNS2025111 kWGas
SHDXC1.87AEDP202571 kWGas
SHDXC1.87AEEF202569 kWGas
SHDXC1.87AEGP202567 kWGas
SHDXC1.92AJM7202578 kWGas
SHDXC1.92ALH9202577 kWGas
SHDXC1.92ALK9202573 kWGas
SHDXC1.98AHM6202586 kWGas
SHDXC1.98AKM8202595 kWGas
SHDXC2.15AUFV2025114 kWGas
RHDXC0.35BPSW4202417 kWGas
RHDXC0.98AGL1202467 kWGas
RHDXC1.25AFJS2024112 kWGas
RHDXC1.25AFK4202490 kWGas
RHDXC1.87AEDP202471 kWGas
RHDXC1.87AEEF202469 kWGas
RHDXC1.87AEFH202476 kWGas
RHDXC1.87AEGP202467 kWGas
RHDXC1.87AEJK202471 kWGas
RHDXC1.92AEHZ202477 kWGas
RHDXC1.92AJM7202478 kWGas
RHDXC1.98AHM6202486 kWGas
RHDXC1.98AKM8202495 kWGas
PHDXC0.35BPSW4202317 kWGas
PHDXC0.98AGL1202367 kWGas
PHDXC1.25AFJS2023112 kWGas
PHDXC1.25AFK4202390 kWGas
PHDXC1.87AEDP202371 kWGas
PHDXC1.87AEEF202369 kWGas
PHDXC1.87AEGP202367 kWGas
PHDXC1.87AEHK202370 kWGas
PHDXC1.87AEJK202371 kWGas
PHDXC1.92AEDL202376 kWGas
PHDXC1.92AEFH202376 kWGas
PHDXC1.92AEHZ202377 kWGas
PHDXC1.98AHM6202386 kWGas
NHDXC0.88CEA2202240 kWGas
NHDXC0.98AGL1202267 kWGas
NHDXC01.2CEA3202250 kWGas
NHDXC1.25AFJS2022112 kWGas
NHDXC1.25AFK4202290 kWGas
NHDXC1.87AEDP202272 kWGas
NHDXC1.87AEGP202269 kWGas
NHDXC1.87AEHK202270 kWGas
NHDXC1.87AEJK202271 kWGas
NHDXC1.92AEDL202279 kWGas
NHDXC1.92AEEH202280 kWGas
NHDXC1.92AEFH202278 kWGas
NHDXC1.92AEHZ202277 kWGas
MHDXC0.50AXGA202127 kWGas
MHDXC0.88CEA2202140 kWGas
MHDXC01.2CEA3202150 kWGas
MHDXC1.25AFJS2021112 kWGas
MHDXC1.25AFK4202190 kWGas
MHDXC1.75AEKJ202165 kWGas
MHDXC1.87AEDP202172 kWGas
MHDXC1.87AEGP202169 kWGas
MHDXC1.87AEHK202170 kWGas
MHDXC1.87AEJK202171 kWGas
MHDXC1.92AEDL202179 kWGas
MHDXC1.92AEEH202180 kWGas
MHDXC1.92AEFH202178 kWGas
LHDXC0.50AXGA202027 kWGas
LHDXC0.75AXGB202043 kWGas
LHDXC0.75AXHG202051 kWGas
LHDXC0.88CEA2202040 kWGas
LHDXC01.2CEA3202050 kWGas
LHDXC1.75AEDC202069 kWGas
LHDXC1.75AEKJ202065 kWGas
LHDXC1.87AEGP202069 kWGas
LHDXC1.87AEHK202070 kWGas
LHDXC1.87AEJK202071 kWGas
LHDXC1.92AEDL202078 kWGas
LHDXC1.92AEEH202080 kWGas
LHDXC1.92AEFF202075 kWGas
KHDXC0.50AXGRev201927 kWGas
KHDXC0.75AXGRev201943 kWGas
KHDXC0.75AXHH.O.Rev201951 kWGas
KHDXC0.88CEAXl883201940 kWGas
KHDXC01.2CEA73-Ev201950 kWGas
KHDXC1.75AED1746201969 kWGas
KHDXC1.75AEKK201965 kWGas
KHDXC1.87AEE1746201969 kWGas
KHDXC1.87AEG1746201969 kWGas
KHDXC1.87AEHK201970 kWGas
KHDXC1.87AEJK201971 kWGas
KHDXC1.92AED1868201970 kWGas
KHDXC1.92AEF1868201975 kWGas
JHDXC0.50AXGRev201827 kWGas
JHDXC0.75AXGRev201843 kWGas
JHDXC0.75AXHH.O.Rev201851 kWGas
JHDXC0.88CEAXl883201840 kWGas
JHDXC01.2CEA73-Ev201850 kWGas
JHDXC1.75AED1746201869 kWGas
JHDXC1.75AEE1746201869 kWGas
JHDXC1.75AEG1746201869 kWGas
JHDXC1.75AEKK201865 kWGas
JHDXC1.87AEHK201870 kWGas
JHDXC1.87AEJK201871 kWGas
JHDXC1.92AED1923201878 kWGas
JHDXC1.92AEF1868201875 kWGas
HHDXC0.50AXGRev201727 kWGas
HHDXC0.75AXGRev201743 kWGas
HHDXC0.75AXHH.O.Rev X201751 kWGas
HHDXC0.88CEAXl883201740 kWGas
HHDXC01.2CEA73-Ev201750 kWGas
HHDXC1.25AEVP-4201795 kWGas
HHDXC1.75AED1746201769 kWGas
HHDXC1.75AEE1746201769 kWGas
HHDXC1.75AEG1746201769 kWGas
HHDXC1.80AEBCvo201767 kWGas
HHDXC1.80AECCvo201760 kWGas
HHDXC1.87AEF1868201775 kWGas
GHDXC0.50AXGRev201627 kWGas
GHDXC0.75AXGRev201643 kWGas
GHDXC0.88CEAXl883201631 kWGas
GHDXC01.2CEA73-Ev201640 kWGas
GHDXC1.25AEVP-4201695 kWGas
GHDXC1.68AEE1688201660 kWGas
GHDXC1.80AEBCvo201666 kWGas
GHDXC1.80AECCvo201660 kWGas
GHDXC1.80AED1688201657 kWGas
GHDXC1.80AEF1802201665 kWGas
GHDXC1.96AEGTwin Cam201668 kWGas
FHDXC0.50AXGXg201527 kWGas
FHDXC0.75AXGRev201544 kWGas
FHDXC0.88CEAXl883201530 kWGas
FHDXC01.2CEA73-Ev201540 kWGas
FHDXC1.25AEVP-4201595 kWGas
FHDXC1.68AEE1688201560 kWGas
FHDXC1.80AEBCvo201562 kWGas
FHDXC1.80AECSt2201557 kWGas
FHDXC1.80AED1688201557 kWGas
FHDXC1.80AEF1802201565 kWGas
FHDXC1.96AEGTwin Cam201568 kWGas
EHDXC0.88CEAXl8201430 kWGas
EHDXC01.2CEA73-Ev201440 kWGas

Other motorcycle engines makers

Honda497Yamaha455Piaggio437Kawasaki425Suzuki382Ducati327Triumph Motorcycles236KTM199Kymco187BMW171Genuine Scooters112

Source

US Environmental Protection Agency engine certification data. Model year and manufacturer are decoded from EPA engine family codes (EPA codes:HDX). 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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