Technical Data; Engine - KTM 790 DUKE 2018 Owner's Manual

23 TECHNICAL DATA

23.1
Design
Displacement
Stroke
Bore
Compression ratio
Control
Valve diameter, intake
Valve diameter, exhaust
Valve play, cold
Intake at: 20 °C (68 °F)
Exhaust at: 20 °C (68 °F)
Crankshaft bearing
Conrod bearing
Piston pin bearing
Pistons
Piston rings
Engine lubrication
248

engine

2-cylinder 4-stroke in-line engine, water-cooled
799 cm³ (48.76 cu in)
65.7 mm (2.587 in)
88 mm (3.46 in)
12.7:1
DOHC, 4 valves per cylinder controlled via cam lever,
chain drive
36 mm (1.42 in)
29 mm (1.14 in)
0.10 ... 0.15 mm (0.0039 ... 0.0059 in)
0.15 ... 0.20 mm (0.0059 ... 0.0079 in)
Slide bearing
Slide bearing
Piston pin with ceramic coating
Forged light alloy
1 compression ring, 1 lower compression ring, 1 oil
ring with spring expander
Semi-dry sump lubrication system with two rotor
pumps