2011 KTM 250 SX-F

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When you have a bike in your range like the 250 SX-F, which has been the dominant force in the World Championship MX2 class for years, then it would be very easy to just sit back and carry on as before. Luckily, however, that’s not how things work in racing, or at KTM for that matter. That’s why the new 2011 generation is being launched with a completely reworked chassis, new bodywork and the next stage in engine development with fuel injection.

Engine type Single cylinder, 4-stroke
Displacement 248.6 cc
Bore x stroke 76 x 54.8 mm (2.99 x 2.16″)
Compression ratio 13.2:1
Starter Kickstarter
Transmission 6 gears
Carburetor Keihin EFI, throttle body 42 mm
Control 4 V/DOHC with finger followers
Lubrication Pressure lubrication with 2 oil pumps
Engine lubrication Motorex, SAE 10W50
Primary drive 22:68
Final drive 13:48
Cooling Liquid cooled
Clutch Wet multi-disc clutch, operated hydraulically
Ignition Keihin EMS

 

Frame Central double-cradle-type 25CrMo4
Subframe Aluminium
Handlebar Renthal, Aluminium Ø 28/22 mm (1.10/0.87″)
Front suspension WP USD Ø 48 mm (1.89″)
Rear suspension WP-Monoshock with linkage
Suspension travel front/rear 300/330 mm
Brakes, front/rear Disc brakes 260/220 mm (10.24/8.66″)
Rims, front/rear 1.60 x 21″; 2.15 x 19″ Excel
Tires, front/rear 80/100-21″; 100/90-19″
Chain 5/8 x 1/4″
Main silencer Aluminium
Steering head angle 63.5°
Wheel base 1495±10 mm
Ground clearance (unloaded) 375 mm
Seat height 992 mm
Tank capacity approx. 7.5 liters
Weight (no fuel) approx. 99.9 kg

 
Get more info at: their website

July 18, 2010 |

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