GoogleCustom Search

2004 KTM 250 EXC Motorcycle

KTM 250 EXC

  • Totally new engine based on KTM's new generation 250 2-stroke.
  • 3.5 kg engine weight reduction.
  • Lighter and more compact engine.
  • Boyesen intake reed case.
  • EXC crankshaft has significantly more oscillating mass when compared to the SX engine for perfectly tuned enduro riding.
  • Dual-ring pistons for increased durability.
  • Cylinder head with special enduro combustion chamber.
  • Kokusan 2K3 digital ignition system and ignition cover with more space for the heavier enduro flywheel.
  • Special digi-box with specifically enduro-tuned ignition curve.
  • EXC 5-speed transmission features extra-short 1st gear and a slightly longer 5th gear.
  • Keihin PWK 36 AG carburettor specially tuned for the flat, rideable torque curve of an enduro motor.
  • Exhaust system is a total new design, offering the perfect fit for the new enduro setup, additionally they are equipped with a new shorter silencer, in combination they are responsible for broad usable powerband and a flat enduro-style output curve.
  • Stronger clutch plates offer more reliability.
  • One-piece ignition rotor.
  • Single-tube racing exhaust with new tuned silencer.
  • Additional useful torque.
  • Weight reduction.
  • High specification chromoly frame features reduced wall thickness at the frame loops of the Racing models from 1.8 mm to 1.5 mm contribute to lower overall weight (total frame weight now less than 9 kg).
  • New forged parts work as linkage carrier (in the swing arm and foot peg area) reducing additional weight.
  • Reinforced steering head gusset plate for more reliability.
  • New 10 mm longer swing arm, attached with a 17 mm strengthened swing arm pivot.
  • Inner tubes of the new 48 mm White Power USD fork are guided with the utmost precision through three (previously 2) bushing guides offering greater sensibility.
  • Newly tuned PDS.
  • New front brake pads.
  • New, even lighter, perforated, high-powered front and rear brake disks.
  • Integrated reservoir foot brake-cylinder
  • New, extra-light brake system with 26 mm rear brake callipers.
  • DID rims.
  • Pirelli MT 83 high specification competition tyres.
  • One-piece fender with integrated side-panels sits on a new sub frame which lowers the rear end by 9 mm.
  • New license plate holders long (series) and short for competition.
  • New taillight for short license plate holder.
  • All seats have a new seat base for rear fender, anchored by a single bolt located underneath the seat.
  • New larger air-filter box.
  • New air filter carrier with triple mounting pins for more reliability (2-stroke).
  • Dual Compound Renthal grips (grey/orange).
  • New decals for the spoiler and air box cover.
  • New frame guards.
  • Only differences between 250 and 300 EXC are the digi box configuration, the exhaust port timing and the piston/cylinder (bore x stroke 250 EXC: 66.4/72 mm, 300 EXC: 72/72 mm).

  • Engine - single cylinder, 2-stroke
  • Displacement (cc) - 249
  • Bore x stroke (mm) - 72 x 72
  • Starter - kick-starter
  • Transmission - 5 gears
  • Carburetor - Keihin PWK 38 AG
  • Control - TVC
  • Lubrication - mixture oil lubrication
  • Transmission lubrication - 0,7 l Motorex Top Speed 15W50
  • Primary drive - 26:72
  • Cooling - liquid cooled
  • Clutch - wet multi-disc clutch, operated hydraulically
  • Ignition - Kokusan digital 2K-3
  • Frame - chromium molybdenum
  • Subframe - aluminium
  • Handlebar - tapered Renthal 28 mm
  • Front suspension - WP-USD 48 MA
  • Rear suspension - WP-PDS-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 18" DID
  • Front / rear tires - 90/90-21"; 140/80-18"
  • Transmission - 13:42
  • 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. 9 litres
  • Weight (ready to race, no fuel) - approx. 105.2 kgs