KTM 250 EXC Racing (MY2005) — Enduro
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2005–2010 · Enduro · Buyer's Guide

250 EXC Racing (MY2005)

The 250 cc Singletrack Scalpel

The Machine's Character

The 250 EXC Racing is KTM's small-bore four-stroke enduro, and nothing about it is watered down. It's a liquid-cooled 250 cc single making 39 hp, with a six-speed gearbox and chain drive. It has no electronic rider aids. No ABS, no traction control, no ride modes. The focus is the chassis: an upside-down WP fork with 11.8 in (300 mm) of travel and 13.2 in (335 mm) at the rear, adjustable at both ends, on a 21-inch front and 18-inch rear wheel. In its class, it sits firmly at the competition end. Pure enduro, nothing else.

Read the numbers and the intent is obvious. 15.0 in (380 mm) of ground clearance, a 58.3 in (1,481 mm) wheelbase and long-travel suspension point straight at roots, rocks and tight woods trails, not the highway. The 36.4 in (925 mm) seat height and 2.1 gal (8 L) tank say the same thing: this bike is for loops that start and end at the trailhead, and it's for someone who already knows their way around a dirt bike. On a trail, grip sets the pace, not horsepower, and 39 hp from 250 cc is built for exactly that. It's a race tool, and it needs race-tool maintenance. Respect that and it fits.

Hard Numbers

Spec sheets don't ride bikes, but they set the baseline.

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Key specifications
Power 39 hp (29 kW)
Displacement 250 cc
Engine Single-cylinder
Cooling Liquid-cooled
Gearbox 6-speed
Final drive Chain
Fork Upside-down (USD)
Front brake 260 mm
Front tire 90/90-21
Rear tire 120/90-18
Wheelbase 58.3 in (1481 mm)
Ground clearance 15.0 in (380 mm)
Front travel 11.8 in (300 mm)
Rear travel 13.2 in (335 mm)
Seat height 36.4 in (925 mm)
Fuel capacity 2.1 gal (8 L)

Equipment check

Chassis

  • Front Suspension Adjustable Standard
  • Rear Suspension Adjustable Standard
Aerial drone view of Palomar Divide Road winding through chaparral-covered mountain ridges in San Diego County. Multiple S-curve sections descend through sparse vegetation with distant valley views visible in the haze. Gravel and packed-earth surface.

Known issues

  • Brake fade under prolonged use

    brakes occasional

    Front brake performance degrades during extended downhill or aggressive riding due to overheating or worn pads, reducing stopping power.

  • Clutch slippage

    drivetrain occasional

    Worn clutch plates can lead to slipping under load, especially after many hours of hard use. Replacement of plates and occasionally the basket resolves the issue.

  • Fork seal leaks

    suspension occasional

    WP fork seals are prone to weeping and leaking, particularly after mud and grit exposure. Regular cleaning and timely replacement of seals and dust wipers is necessary.

  • Carburetor stalling or hard starting

    fuel system occasional

    Owners report hard starting and engine stalling, often traced to clogged fuel filters, dirty carburetor jets, or deteriorated fuel. Regular fuel system maintenance typically resolves the issue.

  • Electrical / ignition starting problems

    electrics occasional

    Weak or no spark under certain conditions, leading to starting difficulties; often traced to ignition coil, plug cap or wiring degradation.

  • Cracked plastics and loose hardware

    bodywork common

    Body panels and fasteners prone to cracking or loosening from the rigors of off‑road use; regular inspection and thread‑locking compounds recommended.

The Numbers Compared

Compare the technical specifications of the KTM 250 EXC Racing with other bikes in its class.

Head-to-head: KTM 250 EXC Racing vs. its rivals