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MZ 125 SX
2020Off-road

MZ 125 SX

Key specifications

Engine
125 cc
Power
15 HP
Weight
137 kg
Fuel type
petrol
Transmission
6-speed
Front brakes
Single disc
Rear brakes
Single disc

Overview

Introducing the 2020 KTM 125 SX, a lightweight powerhouse designed to dominate the enduro-offroad scene. As a member of KTM's celebrated SX line, this bike is engineered for aspiring riders and seasoned veterans alike, providing an exhilarating blend of performance and maneuverability. With its striking colors of white and orange, the 125 SX not only stands out visually but also showcases KTM's commitment to high-quality engineering and racing pedigree. Whether you're tackling tough trails or honing your skills on the track, this motorcycle is built to deliver an unmatched riding experience. At the heart of the 2020 KTM 125 SX lies a potent 124.80 ccm single-cylinder, two-stroke engine that churns out 15 horsepower, ensuring that you have plenty of power on tap for your off-road adventures. The engine’s bore and stroke dimensions of 54.0 x 54.5 mm offer a balanced performance, while the liquid cooling system keeps temperatures in check during intense rides. The 6-speed gearbox provides seamless shifting, allowing riders to harness the engine's power efficiently. With a power-to-weight ratio of 0.1095 HP/kg, the bike feels lively and responsive, making it a joy to navigate tight corners and rugged terrains. The 125 SX is not just powerful; it’s also packed with advanced technology and features that enhance both performance and rider comfort. The fully electronic ignition system, featuring digital timing adjustments, ensures reliable starts and optimal engine performance under various conditions. The central double-cradle frame contributes to the bike's lightweight design and agility, while the WP suspensions—an upside-down front fork with a diameter of 48 mm and a monoshock rear—provide excellent handling and stability. With a front brake disc measuring 260 mm and a rear disc at 220 mm, you can count on robust stopping power, ensuring safety on daring descents. In summary, the 2020 KTM 125 SX is a thrilling machine that embodies the spirit of off-road racing, providing riders with the tools they need to explore the wilderness or improve their skills on the track. With its advanced features and exhilarating performance, it’s no wonder this bike has captured the hearts of many motorcycle enthusiasts.

Pros

  • Lightweight and Agile: Weighing in at just 137 kg (302 lbs), the 125 SX offers incredible maneuverability, making it ideal for both beginners and experienced riders.
  • Powerful Two-Stroke Engine: The responsive single-cylinder engine delivers solid power and quick acceleration, perfect for tackling various terrains.
  • Advanced Suspension Setup: The WP suspension system provides excellent damping and handling, allowing for a smooth ride over rough trails.

Cons

  • Limited Torque: As a 125cc engine, it may lack the low-end torque that some riders prefer for technical climbs or challenging trails.
  • Rider Experience Required: While it's suitable for entry-level riders, the bike's aggressive power delivery may require some experience to fully harness its capabilities.
  • Maintenance Needs: Two-stroke engines typically require more frequent maintenance and care compared to their four-stroke counterparts, which could be a consideration for some riders.

Technical details

Source specification data

Make
KTM
Model
125 SX
Category
Enduro-offroad
Starter
Electric
Color Options
White, Orange
Power
15.00 HP (10.9 kW))
Clutch
Wet multi-disc clutch, mechanically actuated
Gearbox
6-speed
Ignition
Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment, type Kokusan
Driveline
O Ring
.
Primary
drive: 22:72.
Fuel System
Injection
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
Wet sump
Transmission Type Final Drive
Chain
Dry Weight
137.0 kg (302.0 pounds)
Power Weight Ratio
0.1095 HP/kg
Rear Tyre
150-17
Frame Type
Central double-cradle
Front Tyre
110-17
Rear Brakes
Single disc
Front Brakes
Single disc
Rear Suspension
WP monoshock
Front Suspension
WP upside-down Ø 48 mm
Rear Wheel Travel
150 mm (5.9 inches)
Rear Brakes Diameter
220 mm (8.7 inches)
Front Brakes Diameter
260 mm (10.2 inches)

Available colors

WhiteOrange