KTM 250 EXC RACING Owner's Manual page 208

TECHNICAL DATA - ENGINE 400 EXC,450/525 SMR, 450/540 SXS RACING 2004
TYPE
Design
Displacement
Bore/Stroke
Ratio
Fuel
Valve timing
Camshaft
Valve diameter Intake
Valve diameter Exhaust
Valve clearence cold Intake
Valve clearence cold Exhaust
Crank shaft bearing
Connecting rod bearing
Top end bearing
Piston alluminium alloy -
Piston rings
Engine lubrication
Engine oil
Quantity of engine oil
Primary ratio
Clutch
Transmission claw shifted
Gear ratio
1st Gear
2nd Gear
3rd Gear
4th Gear
5th Gear
6th Gear
Ignition system
Generator
Spark plug
Spark plug gap
Cooling system
Cooling liquid
Starting equipment
400 EXC 450 SMR
Liquid-cooled single cylinder 4-stroke engine with balancer shaft
398 cm 3 450 cm 3
89/64 mm 95/63,4 mm
12 : 1
unleaded fuel with at least RON 95 (USA = Premium RON 91)
4 valves over rocker arm and 1 overhead camshaft, camshaft drive through single chain
595/0121 590/5521
35 mm 35 mm (Titan)
30 mm 30 mm (Titan)
0,12 mm
0,12 mm
2 cylinder roller bearing
needle bearing
bronze bushing
bronze bushing forged
1 compression ring, 1 oil scraper ring
pressure circulation lubrication with two rotor pumps
full synthetic oil (Motorex Power Synt 4T 10W/50)
1,25 Liter
straight geared spur wheels 33:76
Mehrscheibenkupplung im Ölbad
6-speed 6-speed
14:34 16:32
17:31 18:30
19:28 20:28
22:26 22:26
24:23 24:24
26:21 21:18
contactless DC-CDI ignition with digital advanced system by KOKUSAN
12V 150W 12V 40W
NGK DCPR 8 E
0,6 mm
liquid cooled, permanent rotation of cooling liquid through mechanically driven water pump
1 liter, 50% antifreeze, 50% water, at least -25°
kick - electric starter kickstarter
525 SMR 450 SXS
510 cm 3 449 cm 3
95/72 mm 95/63,4 mm
11:1 12:1
590/5521 55/21
6-speed
16:32
16:28
21:32
22:29
23:26
21:18
10-15E
540 SXS
534 cm 3
100/68 mm
8/06
4-speed
16:32
18:30
20:28
22:26
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