KTM 790 DUKE
105 hp, 799 cc, 417 lbs2018
Triumph Speed Triple S
140 hp, 1050 cc2016
EngineKTM 790 DUKETriumph Speed Triple S
Engine codeLC8e
Displacement799 cc1050 cc
Max power105 hp (@9 000 RPM)140 hp (@9 500 RPM)
Max torque62 lb ft (@8 000 RPM)82 lb ft (@7 850 RPM)
Redline10 000 RPM10 000 RPM
Idling speed1 200 RPM
ManagementFuel InjectionFuel Injection
LayoutDOHC Inline-2DOHC Inline-3
Compression12.70:112.25:1
Oil capacity3.31 quart
Oil type10W40, Motul 300V 10W40
Spark plug typeNGK CR8EK
CoolingLiquidLiquid
Valves812
Bore88.0 mm79.0 mm
Stroke65.7 mm71.4 mm
Throttle bore42.0 mm
Weight to power3.97 lbs/hp
Power to weight629 hp/2500lbs
Battery type12V - 12Ah
GearboxKTM 790 DUKETriumph Speed Triple S
TypeSequentialSequential
ClutchSlipperWet
DriveChainChain
Chain type520 X-RingX ring
Gears count66
Primary ratio1.9231.75
Final drive2.752.333
1. gear2.846 (49 mph)2.733 (67 mph)
2. gear2.0 (70 mph)1.947 (94 mph)
3. gear1.55 (90 mph)1.545 (119 mph)
4. gear1.272 (109 mph)1.292 (142 mph)
5. gear1.083 (129 mph)1.154 (159 mph)
6. gear0.956 (146 mph)1.074 (171 mph)
ChasisKTM 790 DUKETriumph Speed Triple S
Frame typeCRMO steel frame, stressed engineAluminium beam twin­spar
Front susp.WP 43mm USD, 5.51 in travelShowa 43 mm USD, 4.72 in travel
Rear susp.WP shock absorber, 5.91 in travelShowa monoshock, 5.12 in travel
Dyno chart of 2018 KTM 790 DUKE