Technical Data - Engine - KTM 690 DUKE EU Owner's Manual

TECHNICAL DATA - ENGINE

Design
Displacement (Duke)
Displacement (Duke R)
Stroke (Duke)
Stroke (Duke R)
Bore
Compression ratio (Duke)
Compression ratio (Duke R)
Control
Valve diameter, intake
Valve diameter, exhaust
Valve play, cold
Crankshaft bearing
Conrod bearing
Piston pin bearing (Duke)
Piston pin bearing (Duke R)
Pistons
Piston rings
Engine lubrication
Primary transmission
Clutch
Gearbox
Transmission ratio
1st gear
2nd gear
1-cylinder 4-stroke engine, water-cooled
654 cm³ (39.91 cu in)
690 cm³ (42.11 cu in)
80 mm (3.15 in)
84.5 mm (3.327 in)
102 mm (4.02 in)
11.8:1
12.5:1
OHC, 4 valves controlled via rocker arm, chain drive
40 mm (1.57 in)
34 mm (1.34 in)
0.07... 0.13 mm (0.0028... 0.0051 in)
2 roller bearings
Needle bearing
Bronze bush
Piston pin with DLC coating
Forged light alloy
1 L-ring, 1 tapered compression piston ring, 1 oil scraper ring
Semi-dry sump lubrication with two rotor pumps
36:79
APTC™ Antihopping clutch in oil bath / hydraulically operated
6-gears, claw-shifted
14:35
16:28
156