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KTM 125 SX
2004Off-road

KTM 125 SX

Key specifications

Engine
125 cc
Weight
94 kg
Fuel type
petrol
Fuel capacity
2.0 L
Transmission
5-speed
Seat height
36 mm
Front brakes
Single disc
Rear brakes
Single disc

Overview

Introducing the 2004 KTM 125 SX, a fierce contender in the world of cross-motocross motorcycles that has earned a loyal following among enthusiasts and competitive riders alike. As KTM continues to establish itself as a premier manufacturer of off-road machines, the 125 SX stands out with its lightweight design, agile handling, and spirited performance. This model is specifically engineered for young racers and amateurs looking to hone their skills on the track while navigating the rugged terrain of motocross circuits. With its distinctive orange livery and sharp, aggressive lines, the 125 SX not only performs but also makes a statement. At the heart of the KTM 125 SX is a powerful liquid-cooled, single-cylinder, two-stroke engine with a displacement of 124.80 ccm. It features a bore and stroke of 54.0 x 54.5 mm, delivering a thrilling powerband that responds eagerly to the rider's input. The carburettor fuel system ensures that the engine breathes efficiently, producing an exhilarating rush of power as you twist the throttle. Coupled with a precise 5-speed gearbox, riders will appreciate the seamless transitions between gears, allowing for optimal acceleration and control on the track. Weighing in at just 93.6 kg (206.4 pounds), the 125 SX boasts an impressive power-to-weight ratio that further enhances its agile and responsive nature, making it a formidable opponent on any motocross circuit. KTM's commitment to advanced engineering is evident in the 125 SX's robust chassis and suspension setup. Constructed from chromium molybdenum, the frame provides exceptional strength while remaining lightweight, ensuring durability in the heat of competition. The WP-USD 48/26 front suspension and WP-PDS-DA shock absorber at the rear offer superb handling and rider comfort, effectively absorbing bumps and maintaining traction over varied terrain. The braking system is equally impressive, featuring powerful single discs with a 216 mm front diameter and a 260 mm rear diameter, providing reliable stopping power when it counts. With a ground clearance of 390 mm (15.4 inches) and a seat height of 925 mm (36.4 inches), this bike is engineered for both performance and rider confidence on challenging tracks. **

Pros

  • Lightweight and Agile: At just 93.6 kg, the 125 SX is incredibly nimble, allowing for quick direction changes and precise cornering.
  • Powerful Two-Stroke Engine: The lively engine delivers an exhilarating rush, making it perfect for those seeking a thrilling ride.
  • High-Quality Suspension: The advanced WP suspension setup provides excellent handling and comfort, enabling riders to tackle rough terrain with ease.

Cons

  • Limited Fuel Capacity: With a fuel tank size of only 7.5 liters (1.98 gallons), long sessions on the track may require frequent refueling.
  • Seat Height: At 925 mm, the seat may be a stretch for shorter riders, potentially affecting confidence and control.
  • Two-Stroke Maintenance: The two-stroke engine may require more frequent maintenance compared to four-stroke counterparts, which could be a consideration for less experienced riders.

Technical details

Source specification data

Make
KTM
Model
125 SX
Category
Cross-motocross
Color Options
Orange
Gearbox
5-speed
Fuel System
Carburettor
Bore X Stroke
54.0 x 54.5 mm (2.1 x 2.1 inches)
Displacement
124.80 ccm (7.62 cubic inches)
Cooling System
Liquid
Engine Details
Single cylinder, two-stroke
Transmission Type Final Drive
Chain
Dry Weight
93.6 kg (206.4 pounds)
Seat Height
925 mm (36.4 inches) If adjustable, lowest setting.
Fuel Capacity
7.50 litres (1.98 gallons)
Ground Clearance
390 mm (15.4 inches)
Alternate Seat Height
675 mm (26.6 inches) If adjustable, highest setting.
Rake
24.0°
Trail
63 mm (2.5 inches)
Frame Type
chromium molybdenum
Rear Brakes
Single disc
Front Brakes
Single disc
Rear Suspension
WP-PDS-DA shock absorber
Front Suspension
WP-USD 48/26 MA/PA
Rear Brakes Diameter
260 mm (10.2 inches)
Front Brakes Diameter
216 mm (8.5 inches)

Available colors

Orange