Yamaha MT-03
41 hp, 321 cc2016 - 2018
KTM 390 Duke
43 hp, 373 cc, 346 lbs2015 - 2016
EngineYamaha MT-03KTM 390 Duke
Displacement321 cc373 cc
Max power41 hp (@10 750 RPM)43 hp (@8 600 RPM)
Max torque22 lb ft (@9 000 RPM)25 lb ft (@6 800 RPM)
Redline12 500 RPM10 500 RPM
Idling speed1 200 RPM1 650 RPM
ManagementFuel InjectionFuel Injection
LayoutDOHC Inline-2DOHC Single
Compression11.20:112.90:1
Oil capacity2.27 quart
Oil type10W40, Yamalube 10W40, Shell Rotella 10W4015W50
Spark plug typeNGK CR8EBOSCH VR 5 NE, BOSCH VR 5 NEU
CoolingLiquidLiquid
Valves84
Bore68.0 mm89.0 mm
Stroke44.1 mm60.0 mm
Weight to power8.05 lbs/hp
Power to weight310 hp/2500lbs
Battery typeGTZ8V
GearboxYamaha MT-03KTM 390 Duke
TypeSequentialSequential
ClutchWetWet
DriveChainChain
Chain typeX-Ring 5/8 x 1/4"
Gears count66
Primary ratio3.0432.667
Final drive3.0713.0
1. gear2.5 (39 mph)2.667 (35 mph)
2. gear1.824 (54 mph)1.857 (50 mph)
3. gear1.348 (73 mph)1.421 (66 mph)
4. gear1.087 (91 mph)1.143 (82 mph)
5. gear0.92 (107 mph)0.956 (98 mph)
6. gear0.8 (123 mph)0.84 (112 mph)
ChasisYamaha MT-03KTM 390 Duke
Frame typeDiamondSteel trellis frame
Front susp.41mm Telescopic fork, 5.12 in travelUSD 43mm, 5.91 in travel
Rear susp.Swingarm, 4.92 in travelMonoshock, 5.91 in travel