TECHNICAL DATA - ENGINE 95
15.1125 EXC EU, 125 EXC SIX DAYS EU
Design 1-cylinder 2-stroke engine, water-cooled, with reed intake and
exhaust control
Displacement 124.8 cm³ (7.616 cu in)
Stroke 54.5 mm (2.146 in)
Bore 54 mm (2.13 in)
Crankshaft bearing 1 grooved ball bearing/1 roller bearing
Conrod bearing Needle bearing
Piston pin bearing Needle bearing
Pistons Aluminum cast
Piston rings 2 half keystone rings
X (upper edge of piston to upper edge of cylinder) 0… 0.10 mm (0… 0.0039 in)
Z (height of control flap) 43.5 mm (1.713 in)
Primary transmission 23:73
Clutch Multidisc clutch in oil bath/hydraulically activated
Gearbox 6-gear, claw shifted
Transmission ratio
1st gear 12:33
2nd gear 15:31
3rd gear 17:28
4th gear 19:26
5th gear 21:25
6th gear 20:20
Ignition Kokusan 2K-3
Ignition point (BTDC) 1.4 mm (0.055 in)
Spark plug NGK BR9 ECMVX
Spark plug electrode gap 0.60 mm (0.0236 in)
Starting aid Kickstarter
15.2150 XC USA
Design 1-cylinder 2-stroke engine, water-cooled, with reed intake and
exhaust control
Displacement 143.6 cm³ (8.763 cu in)
Stroke 58.4 mm (2.299 in)
Bore 56 mm (2.2 in)
Crankshaft bearing 1 grooved ball bearing/1 roller bearing
Conrod bearing Needle bearing
Piston pin bearing Needle bearing
Pistons Aluminum cast
Piston rings 2 half keystone rings
X (upper edge of piston to upper edge of cylinder) 0… 0.10 mm (0… 0.0039 in)
Z (height of control flap) 43.1 mm (1.697 in)
Primary transmission 23:73
Clutch Multidisc clutch in oil bath/hydraulically activated
Gearbox 6-gear, claw shifted
Transmission ratio
1st gear 13:32
2nd gear 15:30
3rd gear 17:28
4th gear 19:26
5th gear 21:25
6th gear 22:23
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