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2004 KTM Sportminicycles - 125 SX

KTM 125 SX

The 125 SX has developed to the motorcycle of its class. With lively engine characteristics and optimal cross-handling this motorcycle is the best of many years in the world championship and winner of the US national Championship. By the use of a V-Force Intake System and a new exhaust the performance is improved significantly.

The 125 EXC is the introductory model to professional Enduro sport. Developed by World champions it has been the benchmark in the 125cc class for years.

V-Force Intake System offers more peak power and better throttle response. New exhaust pipe results in more midrange and top end power.

  • Engine - single cylinder, 2-stroke
  • Displacement (cc) - 124.8
  • Bore x stroke (mm) - 54 x 54,5
  • Starter - kick-starter
  • Transmission - 5 gears
  • Carburetor - Keihin PWK 39
  • Control - TVC
  • Lubrication - mixture oil lubrication
  • Transmission lubrication - 0,7 l Motorex Gear Oil EP 80W
  • Primary drive - 23 : 73
  • 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 tyres - 80/100-21"; 100/90-19"
  • Transmission - 13:50
  • Chain - X-ring chain 5/8 x 1/4"
  • Main silencer - aluminum
  • Steering head angle - 63
  • Wheel caster - 120 mm
  • Wheelbase - 147110 mm
  • Ground clearance (unloaded) - 390 mm
  • Seat height - 925 mm
  • Fuel capacity - approx. 7.5 litres
  • Weight (ready to race, no fuel) - approx. 93.6 kgs