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2004 KTM Sportminicycles - 50 Mini Adventure

KTM 250 SX

The overworked engine characteristic is responsible for a broader powerband and less aggressive power output, together with the triple clamp (off-set 20 mm) which improves the rideability. Manageable 97.7 kg makes the 2-stroke a competition bike for ambitious riders.

Based on the new 250 2-stroke engines, KTM developed an Enduro which is the new benchmark in its class. Approx. 105 kg and an uncompromising orientation of all components on the Endurosport characterise this bike. This leads to spontaneous, but controllable power as well as easy handling. The technical differences between the 300 EXC and the 250 EXC are the bigger bore, the separate digi box and the adapted exhaust port timing.

Less displacement for more 4-stroke riding fun. The perfect nostress Enduro motorcycle with a double talent: Beginner Enduro and pro machine.

  • Modified carrier-plate of the lining discs for enhanced durability.
  • Special SX ignition cover reduces engine weight.
  • Exhaust port system timing adjusted for smoother power delivery (two alternative settings possible).
  • New crankshaft with increased inertia for better traction and improved rear-wheel control.
  • New carburettor setting for better rideability.
  • V-Force Intake System case for more accurate engine response to the throttle movement.
  • New exhaust pipe and silencer designed for increased torque leading to a more usable powerband.
  • Engine - single cylinder, 2-stroke
  • Displacement (cc) - 249
  • Bore x stroke (mm) - 66.4 x 72
  • Starter - kick-starter
  • Transmission - 5 gears
  • Carburetor - Keihin PWK 38 S
  • Control - TVC
  • Lubrication mixture - oil lubrication
  • Transmission lubrication - 0,7 l Motorex Gear Oil EP 80W
  • Primary drive - 26 : 72
  • Cooling - liquid cooled
  • Clutch - wet multi-disc clutch, operated hydraulically
  • Ignition - Kokusan digital 2K-1
  • Frame - chromium molybdenum
  • Subframe - aluminium
  • Handlebar - tapered Renthal R 28 mm
  • Front suspension - WP-USD 48/26 MA/PA
  • Rear suspension - WP-PDS-DA shock absorber
  • Suspension travel - front/rear 300 / 335 mm
  • Front / Rear brakes - disc brakes 260 / 220 mm
  • Front / rear rims - 1.60 x 21"; 2.15 x 19" Excel
  • Front / rear tires - 80/100-21"; 110/90-19"
  • Transmission - 13:50
  • Chain - X-ring chain 5/8 x 1/4"
  • Main silencer - aluminum
  • Steering head angle - 63
  • Wheel caster - 116 mm
  • Wheelbase - 147510 mm
  • Ground clearance (unloaded) - 385 mm
  • Seat height - 925 mm
  • Fuel capacity - approx. 7.5 litres
  • Weight (ready to race, no fuel) - approx. 97.7 kgs