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KTM 125 SX
2012Off-road

KTM 125 SX

Key specifications

Engine
125 cc
Weight
92 kg
Fuel type
petrol
Fuel capacity
2.0 L
Transmission
6-speed
Seat height
39 mm
Front brakes
Single disc
Rear brakes
Single disc

Overview

Introducing the 2012 KTM 125 SX, a powerhouse in the world of enduro and off-road motorcycles. Renowned for its agility and spirited performance, the 125 SX is designed for riders who crave an exhilarating experience on rugged terrains. It holds a special place in KTM's lineup, appealing to both seasoned racers and ambitious newcomers looking to hone their skills. With its striking orange, black, and white color scheme, this bike not only stands out visually but also represents the cutting-edge engineering that KTM is known for. At the heart of the 125 SX lies a potent 124.80cc single-cylinder, two-stroke engine, meticulously crafted to deliver an impressive balance of power and responsiveness. With a bore and stroke of 54.0 x 54.5 mm, the engine is engineered to provide a thrilling ride, especially in challenging off-road conditions. The carbureted Keihin PWK 38S AG fuel system ensures that the engine breathes efficiently, while the fully electronic ignition system offers precise timing adjustments for optimal performance. The 6-speed gearbox allows for seamless shifting, making it easy to tackle varying terrains, while the wet double disk clutch provides smooth engagement, enhancing overall control. Beyond its remarkable engine performance, the 125 SX is equipped with advanced suspension technology that sets it apart from competitors. The WP suspension system, featuring 300 mm of front travel and 330 mm of rear travel, provides unmatched shock absorption and stability, allowing riders to conquer obstacles with confidence. The chrome molybdenum steel tubing frame offers a lightweight yet sturdy structure, contributing to the motorcycle's impressive handling and maneuverability. With a ground clearance of 395 mm and a seat height of 992 mm, it offers a comfortable riding position, making it suitable for a wide range of riders. **

Pros

  • Lightweight Design: At just 91.6 kg (201.9 pounds), the 125 SX is incredibly nimble, making it perfect for tight trails and technical riding.
  • Exceptional Suspension: The WP suspension setup provides excellent handling and comfort, soaking up bumps and obstacles effortlessly.
  • Powerful Engine: The two-stroke engine delivers a thrilling power-to-weight ratio, ensuring an exhilarating ride on any terrain.

Cons

  • Kick Start Only: The absence of an electric starter may be a drawback for some riders, especially in tricky situations.
  • Limited Fuel Capacity: With a fuel tank capacity of 7.50 litres (1.98 gallons), riders may need to refuel more frequently during longer rides.
  • Higher Seat Height: With a seat height of 992 mm (39.1 inches), it may not be the best fit for shorter riders or those who prefer a lower center of gravity.

Technical details

Source specification data

Make
KTM
Model
125 SX
Category
Enduro-offroad
Starter
Kick
Color Options
Orange/black/white
Clutch
Wet
m
Double
disk clutch / hydraulically operated
Gearbox
6-speed
Ignition
Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment, type Kokusan
Driveline
13:50
Engine Type
Reed intake and exhaust control
Fuel System
Carburettor. Keihin PWK 38S AG
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
Lubrication System
Mixture oil lubrication 1:40
Transmission Type Final Drive
Chain
Dry Weight
91.6 kg (201.9 pounds)
Seat Height
992 mm (39.1 inches) If adjustable, lowest setting.
Fuel Capacity
7.50 litres (1.98 gallons)
Ground Clearance
395 mm (15.6 inches)
Rake
26.5°
Rear Tyre
100/90-19
Frame Type
Central tube frame made of chrome molybdenum steel tubing
Front Tyre
80/100-21
Rear Brakes
Single disc
Front Brakes
Single disc
Rear Suspension
WP Suspension
Front Suspension
WP Suspension
Rear Wheel Travel
330 mm (13.0 inches)
Front Wheel Travel
300 mm (11.8 inches)
Rear Brakes Diameter
220 mm (8.7 inches)
Front Brakes Diameter
260 mm (10.2 inches)

Available colors

Orange/black/white