Technical Data - Engine; Capacity - Engine Oil; Capacity - Gear Oil - KTM 450 EXC Owner's Manual

TECHNICAL DATA - ENGINE

Design
Displacement (450 EXC USA)
Displacement (530 EXC USA)
Stroke (450 EXC USA)
Stroke (530 EXC USA)
Bore
Compression ratio
Idle speed
Control
Valve diameter, intake
Valve diameter, exhaust
Valve clearance
Exhaust at: 20 °C (68 °F)
Intake at: 20 °C (68 °F)
Crankshaft bearing
Conrod bearing
Piston pin bearing
Pistons
Piston rings
Engine lubrication
Primary transmission
Clutch
Transmission ratio
1st gear
2nd gear
3rd gear
4th gear
5th gear
6th gear
Generator
Ignition
Spark plug
Spark plug electrode gap
Cooling
Starter

Capacity - engine oil

20.1
Engine oil

Capacity - gear oil

20.2
Gear oil
0.60 l (0.63 qt.)
0.90 l (0.95 qt.)
1-cylinder 4-stroke engine, water-cooled
449.3 cm³ (27.418 cu in)
510.4 cm³ (31.147 cu in)
63.4 mm (2.496 in)
72 mm (2.83 in)
95 mm (3.74 in)
11.9:1
1,550... 1,650 rpm
OHC, 4 valves controlled via rocker arm, drive via tooth/wheel
chain
39.5 mm (1.555 in)
31.7 mm (1.248 in)
0.12... 0.17 mm (0.0047... 0.0067 in)
0.10... 0.15 mm (0.0039... 0.0059 in)
2 grooved ball bearings
Needle bearing
No bearing bushes - DLC-plated piston pins
Forged light alloy
1 compression ring, 1 oil scraper ring
Pressure circulation lubrication with 2 rotor pumps (engine) / 1
rotor pump (transmission)
33:76
Multidisc clutch in oil bath / hydraulically activated
14:36
17:32
19:28
22:26
24:23
26:21
12 V, 150 W
Contactless controlled fully electronic ignition with digital igni-
tion adjustment, type Kokusan
NGK LKAR 8AI - 9
0.9 mm (0.035 in)
Water, permanent circulation of coolant by water pump
Electric starter/kick starter
Engine oil (SAE 10W/50) (
Engine oil (SAE 10W/50) (
p. 108)
p. 108)
98