2011 KTM 350 SX-F Video Preview

350 SX-F Video

Stefan Everts, world motocross champion with 14 victories in 15 Grand Prix, set out as the KTM Race Director to design a better MX bike.

Everts had a vision where the future of motocross was heading and in KTM he found an ideal partner for his vision: efficient and maximum practicable performance from smaller displacements in an overall package that’s tailored unconditionally to the requirements of the rider.

After 4 years in the making, it’s ready: the new 2011 KTM 350 SX-F. With a new engine, fuel injection system and smaller displacement, new bodywork, new chassis – in fact, a whole new concept.

What with the first Grand Prix victory and racing to the top of the overall standings in the MX1 class after only two races, maybe even the beginning of a new era in motocross.

 
Engine
type
Single cylinder,
4-stroke
Displacement349.7 cc
Bore
x stroke
88/57.5 mm
Compression
ratio
13.5:1
StarterElectric starter/12V 3
Ah
Transmission5 gears
CarburetorKeihin EFI, throttle
body 42 mm
Control4 V/DOHC with finger
followers
LubricationPressure lubrication
with 2 oil pumps
Engine
lubrication
Motorex, SAE 10W50
Primary
drive
24:73
Final
drive
14:50
CoolingLiquid cooled
ClutchWet multi-disc clutch,
operated hydraulically
IgnitionKeihin EMS
 
 
FrameCentral double-cradle-type 25CrMo4
SubframeAluminium
HandlebarRenthal, Aluminium Ø 28/22 mm (1.10/0.87")
Front suspensionWP USD Ø 48 mm (1.89")
Rear suspensionWP-Monoshock with linkage
Suspension travel front/rear300/330 mm
Brakes, front/rearDisc brakes 260/220 mm (10.24/8.66")
Rims, front/rear1.60 x 21"; 2.15 x 19" Excel
Tires, front/rear80/100-21"; 110/90-19"
Chain5/8 x 1/4"
Main silencerAluminium
Steering head angle63.5°
Wheel base1495±10 mm
Ground clearance (unloaded)375 mm
Seat height992 mm
Tank capacityapprox. 7.5 liters
Weight (no fuel)approx. 103.9 kg