KTM 390 Duke
43 hp, 373 cc, 346 lbs2015 - 2016
Kawasaki Ninja 400
49 hp, 399 cc, 366 lbs2018 - 2020
EngineKTM 390 DukeKawasaki Ninja 400
Displacement373 cc399 cc
Max power43 hp (@8 600 RPM)49 hp (@10 000 RPM)
Max torque25 lb ft (@6 800 RPM)28 lb ft (@8 000 RPM)
Redline10 500 RPM9 500 RPM
Idling speed1 650 RPM1 200 RPM
ManagementFuel InjectionFuel Injection
LayoutDOHC SingleDOHC Inline-2
Compression12.90:111.60:1
Oil type15W50
Spark plug typeBOSCH VR 5 NE, BOSCH VR 5 NEU
CoolingLiquidLiquid
Valves48
Bore89.0 mm70.0 mm
Stroke60.0 mm51.8 mm
Throttle bore32.0 mm
Weight to power8.05 lbs/hp7.47 lbs/hp
Power to weight310 hp/2500lbs334 hp/2500lbs
GearboxKTM 390 DukeKawasaki Ninja 400
TypeSequentialSequential
ClutchWetSlipper
DriveChainChain
Chain typeX-Ring 5/8 x 1/4"
Gears count66
Primary ratio2.6672.219
Final drive3.02.929
1. gear2.667 (35 mph)2.929 (36 mph)
2. gear1.857 (50 mph)2.056 (51 mph)
3. gear1.421 (66 mph)1.619 (65 mph)
4. gear1.143 (82 mph)1.333 (78 mph)
5. gear0.956 (98 mph)1.154 (91 mph)
6. gear0.84 (112 mph)1.037 (101 mph)
ChasisKTM 390 DukeKawasaki Ninja 400
Frame typeSteel trellis frameSteel trellis frame
Front susp.USD 43mm, 5.91 in travel41mm fork, 4.72 in travel
Rear susp.Monoshock, 5.91 in travelMonoshock, 5.12 in travel