KTM 250 EXC Enduro (1999 – 2000)

KTM 250 EXC Enduro (1999 - 2000)

In the late 1990s, KTM’s 250 EXC Enduro stood head and shoulders above its competitors, a dominant force in the 250cc enduro class. This impressive machine boasted a potent two-stroke engine, renowned for its explosive power and snappy throttle response. The 1999 model, in particular, was a benchmark of performance, outpacing its 2000 successor.

The KTM 250 EXC’s engine character was defined by its ferocious acceleration and exceptional handling, making it a joy to ride both on and off the track. Its agility and responsiveness were unmatched, allowing riders to carve through challenging terrain with ease.

As the decade progressed, the KTM 250 EXC continued to set the standard for its class, its reputation as a high-performance enduro bike cemented by its numerous victories in Dirt Bike Magazine’s annual comparisons. Even today, this iconic machine remains a benchmark of excellence, its enduring legacy a testament to KTM’s unwavering commitment to innovation and performance.

Key Specifications

Engine TypeTwo stroke, single cylinder
Engine Capacity249 cc / 15.2 cu in
Fuel Tank Capacity9.5 Litres or 12 L / 2.5 US gal or 3.2 US gal
Seat Height36.4 inches / 925 mm
KTM 250 EXC Enduro (1999 - 2000)

All Specifications

Make & Model

ModelKTM 250 EXC Enduro
Year1999 – 2000

Engine

Engine TypeTwo stroke, single cylinder
Displacement249 cc / 15.2 cu in
Bore x Stroke67.5 x 69.5 mm
Compression Ratio6.0:1
Engine Management SystemKeihin PWK 36 S AGCarburettor
Lubrication SystemTwo stroke oil, mix: 1:50 – 1:60
Cooling SystemLiquid cooled

Performance

Top Speedn/a

Transmission

ClutchWet, multiplate, hydraulically operated
Gearbox5 Speed
Primary Drive Ratio25:72
Gear Ratios1 st 15:29 / 2nd 18:26 / 3rd 19:22 / 4th 21:20 / 5th 23:18
Final DriveChain, 5/8″ x 1/4″

Electrical & Electronics System

StarterKick

Chassis & Suspension

Frame TypeCentral chrome-moly-steel frame
Front SuspensionWP Extreme 50 mm upsidedown fork
Rear SuspensionWP Progressive Damping System shock absorber, aluminium swingarm
Rake26.6
Trail114 mm / 4.5 in

Wheels & Brakes

Front Tire Size90/90 – 21″ 54R
Rear Tire Size140/80 – 18″ 70R
Front BrakesSingle 260 mm disc, floating caliper
Rear BrakesSingle 220 mm disc, floating caliper

Dimension & Weights

Seat Height36.4 inches / 925 mm
Wheelbase58.3 inches / 1481 mm
Ground Clearance385 mm / 15 in
Fuel Tank Capacity9.5 Litres or 12 L / 2.5 US gal or 3.2 US gal
Dry Weight108.2 kg / 238.5 lbs

Features

  • PDS rear suspension
  • Hydraulic clutch
  • Jetting system (note: not fully reliable)
  • Fast acceleration
  • Excellent off-road performance
  • Dominant in the 250 enduro category
  • Won every 250 two-stroke off-road bike comparison from 1990s
  • Available in 250, 300, and 380 versions
  • 380 model is very fast, but not as trail-friendly
  • 300 model later steals the limelight from the 250
  • 250 model is one of the best bikes in its class
  • 1999 model is faster than the 2000 model
  • 1999 model has a workable PDS rear suspension
  • 250 EXC is available in both MXC and EXC versions

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