KTM 125 EXC - 2004 Specifications and Reviews

The 2004 KTM 125 EXC is a lightweight enduro machine ideal for amateur and intermediate off-road riders seeking an agile, nimble performer. Powered by a potent 125cc two-stroke engine, it excels in technical terrain with its responsive handling and compact chassis. This model became a benchmark for affordable enduro bikes, balancing competitive performance with accessibility for weekend warriors and smaller-framed riders.

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General information

CategoryEnduro / offroad
Year2004
ModelKTM 125 EXC

Engine and Transmission Specifications

Transmission type,final driveChain
Gearbox6-speed
Cooling systemLiquid
Fuel systemCarburettor
Bore x stroke54.0 x 54.5 mm (2.1 x 2.1 inches)
Compression11.0:1
Engine typeSingle cylinder, two-stroke
Capacity:124.80 ccm (7.62 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakes diameter260 mm (10.2 inches)
Rear brakesSingle disc
Front brakes diameter216 mm (8.5 inches)
Front brakesSingle disc
Rear suspensionWP-PDS-shock absorber
Front suspensionWP-USD 48 MA
Frame typeChromium molybdenum
 
 

Physical measures and capacities

Fuel capacity9.00 litres (2.38 gallons)
Wheelbase1,471 mm (57.9 inches)
Ground clearance390 mm (15.4 inches)
Alternate seat height675 mm (26.6 inches) If adjustable, highest setting.
Seat height925 mm (36.4 inches) If adjustable, lowest setting.
Dry weight101.4 kg (223.5 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsOrange

Performance Profile & Rider Fit

Best For

Track20%
City15%
Cornering55%
Daily Riding10%
Touring15%
Passenger5%

Rider Profile

Best ForThis is a demanding, race-bred two-stroke enduro best suited to experienced off-road riders who understand peaky power delivery and no electronic aids.
PurposeBuilt purely for competitive enduro and technical off-road riding, not for street use or general transportation.
Rider FitIts extremely light dry weight and tall seat height reward an agile, fit rider who can stand, shift body weight, and manhandle the bike over obstacles.
CharacterA raw, high-strung two-stroke with sharp, explosive power and razor-quick handling that thrives on tight trails and technical terrain.
Not Ideal ForIt is not suitable for daily commuting, highway touring, carrying a passenger, or riders seeking comfort and predictability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2004 KTM 125 EXC Rider Ergonomics Assessment

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Feet:

At 925mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2004 KTM 125 EXC, with a cramped knee angle of around 80 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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