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2012 NEW MOTOCROSS BIKE BUYERS GUIDE: THE 2012 KTM 250SXF, 350SXF AND 450SXF FOUR-STROKES

There are a few surprises—like an electric start for the 250 four-stroke and a carb on the 450SXF
   2012 KTM 450SXF

2012 KTM 450SXF SPECS
Engine type:     Single cylinder, 4-stroke
Displacement:     449.3 ccm
Bore/stroke:     97/60.8 mm
Compression ratio:     12.5:1
Starter/battery:     Electric starter / 12V 3Ah
Transmission:     5 gears
Carburetor:     Keihin FCR-MX 41
Control:     4 V / DOHC with finger followers
Lubrication:     Pressure lubrication with 3 oil pumps
Gear ratios:     16:34, 19:31, 20:26, 23:25, 26:24
Primary ratio:     29:74
Final drive:     14:52
Cooling:     Liquid cooling
Clutch:     Wet multi-disc clutch, Magura hydraulics
Ignition:     Kokusan

Chassis     
Frame:     Central double-cradle-type 25CrMo4
Subframe:     Aluminium
Handlebar:     Renthal, Aluminium Ø 28/22 mm
Front suspension:     WP-USD, Closed Cartridge, Ø 48 mm
Rear suspension:     WP-Monoshock with linkage
Suspension travel front/rear:     300/330 mm
Front/rear brakes:     Disc brake 260/220 mm
Front/rear rims:     1.60 x 21"; 2.15 x 19" Excel
Front/rear tires:     80/100-21"; 110/90-19"
Chain:     5/8 x 1/4"
Silencer:   Aluminium
Steering head angle:     63.5°
Wheel base:     1,495 ± 10 mm
Ground clearance:     371 mm
Seat height:     992 mm
Tank capacity, approx.:     7.5 l
Weight, without fuel, approx.:     106.9 kg



2012 KTM 350SXF


2012 KTM 350SXF SPECS
Engine type:     Single cylinder, 4-stroke
Displacement:     349.7 cc
Bore/stroke:     88/57.5 mm
Compression ratio:   13.5:1
Starter/battery     Electric starter / 12V 3Ah
Transmission:     5 gears
Carburetor:     Keihin EFI, throttle body 42 mm
Control:   4 V / DOHC with finger followers
Lubrication:     Pressure lubrication with 2 oil pumps
Gear ratios:     14:28, 16:26, 18:24, 21:24, 22:21
Primary ratio:     24:73
Final drive:     14:50
Cooling:     Liquid cooling
Clutch:     Wet multi-disc clutch, Brembo hydraulics
Ignition:     Keihin EMS
Chassis
 

Frame:     Central double-cradle-type 25CrMo4
Subframe:     Aluminium
Handlebar:     Renthal, Aluminium Ø 28/22 mm
Front suspension:     WP-USD, Closed Cartridge, Ø 48 mm
Rear suspension:     WP-Monoshock with linkage
Suspension travel front/rear:     300/330 mm
Front/rear brakes:     Disc brake 260/220 mm
Front/rear rims:     1.60 x 21"; 2.15 x 19" Excel
Front/rear tires:     80/100-21"; 110/90-19"
Chain:     5/8 x 1/4"
Silencer:   Aluminum
Steering head angle:     63.5°
Wheel base:     1,495 ± 10 mm
Ground clearance:     375 mm
Seat height:     992 mm
Tank capacity, approx.:     7.5 l
Weight, without fuel, approx.:     103.9 kg


2012 KTM 250SXF



Every 250SXF will come with electric start for 2012.

2012 KTM 250SXF SPECS
Engine type:     Single cylinder, 4-stroke
Displacement:     248.6 cc
Bore/stroke:     76/54.8 mm
Compression ratio     13.2:1
Starter/battery:     Electric starter / 12V 3Ah
Transmission:     6 gears
Carburetor:     Keihin EFI, throttle body 42 mm
Control:     4 V / DOHC with finger followers
Lubrication:     Pressure lubrication with 2 oil pumps
Gear ratios:     13:32 ,15:30, 17:28, 19:26, 21:25, 22:24
Primary ratio:     22:68
Final drive:     13:48
Cooling:     Liquid cooling
Clutch:     Wet multi-disc clutch, Brembo hydraulics
Ignition:     Keihin EMS

Chassis     
Frame:     Central double-cradle-type 25CrMo4
Subframe:     Aluminium
Handlebar:     Renthal, Aluminium Ø 28/22 mm
Front suspension:     WP-USD, Closed Cartridge, Ø 48 mm
Rear suspension:     WP-Monoshock with linkage
Suspension travel front/rear:     300/330 mm
Front/rear brakes:     Disc brake 260/220 mm
Front/rear rims:     1.60 x 21"; 2.15 x 19" Excel
Front/rear tires:     80/100-21"; 100/90-19"
Chain:     5/8 x 1/4"
Silencer:     Aluminum
Steering head angle:     63.5°
Wheel base:     1,495 ± 10 mm
Ground clearance:     375 mm
Seat height:     992 mm
Tank capacity, approx:.     7.5 l
Weight, without fuel, approx:     102.9 kg



MAY 2012, VOLUME 40, NUMBER 5
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WARNING: Much of the action de­pict­­ed in this magazine is potentially dan­gerous. Virtually all of the riders seen in our photos are experienced ex­­perts or professionals. Do not at­tempt to duplicate any stunts that are be­­yond your own capabilities. Always wear the appropriate safety gear.