24 Technical Specifications; Engine; All 250 Models; All 300 Models - KTM 250 EXC 2024 Owner's Manual

24 TECHNICAL SPECIFICATIONS

24.1
24.1.1
Design
Displacement
Stroke
Hole
Idle speed
Crankshaft bearing
Conrod bearing
Piston pin bearing
Piston
Piston rings
Engine lubrication
X-distance (upper edge of piston to special tool)
Z distance (height of control flap)
Primary transmission
Clutch
Transmission
Transmission ratio
first-gear
second-gear
third-gear
fourth-gear
fifth-gear
sixth-gear
Alternator
Ignition system
Spark plug
Spark plug electrode gap
Cooling
Starting aid
24.1.2
Design
Displacement
Stroke
Hole
Idle speed
Crankshaft bearing
Conrod bearing
Piston pin bearing
Piston
150

Engine

All 250 models

All 300 models

1-cylinder 2-stroke engine, water-cooled, with reed
intake and exhaust control
249 cm³ (15.19 cu in)
72 mm (2.83 in)
66.4 mm (2.614 in)
1,400 ... 1,500 rpm
1 grooved ball bearing/1 roller bearing
Needle bearing
Needle bearing
Cast aluminum
2 half keystone rings
Mixed lubrication
0 ... 0.10 mm (0 ... 0.0039 in)
50.0 mm (1.969 in)
26:72
Multidisc clutch in oil bath/hydraulically activated
6-gear transmission, claw shifted
13:33
16:30
18:26
22:26
23:23
26:22
12 V, 110 W
Electronic ignition
NGK BR 7 ES
0.60 mm (0.0236 in)
Water cooling, permanent circulation of coolant by
water pump
Electric starter system
1-cylinder 2-stroke engine, water-cooled, with reed
intake and exhaust control
293.15 cm³ (17.8892 cu in)
72 mm (2.83 in)
72 mm (2.83 in)
1,400 ... 1,500 rpm
1 grooved ball bearing/1 roller bearing
Needle bearing
Needle bearing
Cast aluminum