Technical Data - Engine; 125 Exc Eu, 125 Exc Six Days Eu; All 200 Models - KTM 125 ECX EU Owner's Manual

TECHNICAL DATA - ENGINE

125 EXC EU, 125 EXC SIX DAYS EU

20.1
Design
Displacement
Stroke
Bore
Crankshaft bearing
Conrod bearing
Piston pin bearing
Pistons
Piston rings
X (upper edge of piston to upper edge of cylinder)
Z (height of control flap)
Primary transmission
Clutch
Gearbox
Transmission ratio
1st gear
2nd gear
3rd gear
4th gear
5th gear
6th gear
Ignition
Ignition point (BTDC)
Spark plug
Spark plug electrode gap
Starting aid

All 200 models

20.2
Design
Displacement
Stroke
Bore
Crankshaft bearing
Conrod bearing
Piston pin bearing
Pistons
Piston rings
X (upper edge of piston to upper edge of cylinder)
Z (height of control flap)
Primary transmission
Clutch
Gearbox
Transmission ratio
1st gear
2nd gear
3rd gear
4th gear
5th gear
1-cylinder 2-stroke engine, water-cooled, with reed intake and
exhaust control
124.8 cm³ (7.616 cu in)
54.5 mm (2.146 in)
54 mm (2.13 in)
1 grooved ball bearing/1 roller bearing
Needle bearing
Needle bearing
Aluminum cast
2 half keystone rings
0... 0.10 mm (0... 0.0039 in)
43.7 mm (1.72 in)
23:73
Multidisc clutch in oil bath/hydraulically activated
6-gear, claw shifted
12:33
15:31
17:28
19:26
21:25
20:20
Contactless controlled fully electronic ignition with digital igni-
tion adjustment, type Kokusan
1.4 mm (0.055 in)
NGK BR9 ECMVX
0.60 mm (0.0236 in)
Kick starter
1-cylinder 2-stroke engine, water-cooled, with reed intake and
exhaust control
193 cm³ (11.78 cu in)
60 mm (2.36 in)
64 mm (2.52 in)
1 grooved ball bearing/1 roller bearing
Needle bearing
Needle bearing
Aluminum cast
2 rectangular rings
0... 0.10 mm (0... 0.0039 in)
47 mm (1.85 in)
23:73
Multidisc clutch in oil bath/hydraulically activated
6-gear, claw shifted
12:33
15:31
17:28
19:26
17:19
106