KTM SXF350 2019

Engine

Design

 

1-cylinder 4-stroke engine, water-cooled

Displacement

349.7 cm³ (21.34 cu in)

Stroke

57.5 mm (2.264 in)

Bore

88 mm (3.46 in)

Compression ratio

14.2:1

Idle speed

2,250 … 2,350 rpm

Control

DOHC, four valves controlled via cam lever, drive via timing chain

Valve diameter, intake

36.3 mm (1.429 in)

Valve diameter, exhaust

29.1 mm (1.146 in)

Valve clearance

Intake at: 20 °C (68 °F)

0.10 … 0.15 mm (0.0039 … 0.0059 in)

Exhaust at: 20 °C (68 °F)

0.13 … 0.18 mm (0.0051 … 0.0071 in)

Crankshaft bearing

2 cylinder bearings

Conrod bearing

Plain bearing

Piston pin bearing

Bearing bush

Pistons

Forged light alloy

Piston rings

1 compression ring, 1 oil scraper ring

Engine lubrication

Pressure circulation lubrication with two Eaton pumps

Primary transmission

24:73

Clutch

Multidisc clutch in oil bath/hydraulically activated

Gearbox (All SX-F models)

5-gear, claw shifted

Gearbox (XC-F US)

6-gear, claw shifted

Transmission ratio (All SX-F models)

1st gear

14:28

2nd gear

16:26

3rd gear

18:24

4th gear

21:24

5th gear

22:21

Transmission ratio (XC-F US)

1st gear

15:31

2nd gear

16:25

3rd gear

20:25

4th gear

22:23

5th gear

25:22

6th gear

26:20

Alternator

12 V, 70 W

Ignition

Contactless controlled fully electronic ignition with digital ignition adjustment

Spark plug

NGK LMAR9AI-8

Spark plug electrode gap

0.8 mm (0.031 in)

Cooling

Water cooling, permanent circulation of coolant by water pump

Starting aid

Electric starter

Engine oil

1.0 l (1.1 qt.)

Coolant

0.95 l (1 qt.)

Total fuel tank capacity, approx. (All SX-F models)

7 l (1.8 US gal)

Electric

Battery

 

Lithium-ion battery, Battery voltage: 12 V, 2.0 Ah, Maintenance-free

Fuse

10A

Malfunction indicator lamp

LED

Remaining indicator lamps (XC-F US)

W2.3W / socket W2x4.6d – 12V

Frame

Frame

 

Central tube frame made of chrome molybdenum steel tubing

Fork

WP Suspension Upside down AER 48

Suspension travel

 

front

310 mm (12.2 in)

rear

300 mm (11.81 in)

Fork offset

22 mm (0.87 in)

Shock absorber

WP Suspension 5018 DCC Link

Brake system

Disc brakes, brake calipers on floating bearings

Brake discs - diameter

 

front

260 mm (10.24 in)

rear

220 mm (8.66 in)

Brake discs - wear limit

 

front

2.5 mm (0.098 in)

rear

3.5 mm (0.138 in)

Tire air pressure off road

 

front

1.0 bar (15 psi)

rear

1.0 bar (15 psi)

Secondary ratio

14:50

Chain

5/8 x 1/4"

Rear sprockets available

48, 50, 52

Steering head angle

63.9°

Wheelbase

1,485 ± 10 mm (58.46 ± 0.39 in)

Seat height, unloaded

950 mm (37.4 in)

Ground clearance, unloaded

370 mm (14.57 in)

Weight without fuel, approx. (All SX-F models)

99.5 kg (219.4 lb.)

Weight without fuel, approx. (XC-F US)

100.5 kg (221.6 lb.)

Maximum permissible front axle load

145 kg (320 lb.)

Maximum permissible rear axle load

190 kg (419 lb.)

Maximum permissible overall weight

335 kg (739 lb.)

 

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