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MZ 125 SX
2011Off-road

MZ 125 SX

Key specifications

Engine
125 cc
Weight
89 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 2011 KTM 125 SX, a standout in the competitive realm of enduro-offroad motorcycles. Designed for both seasoned riders and those looking to hone their skills, the 125 SX is a lightweight, agile machine that strikes a perfect balance between power and precision. With its striking orange, black, and white color scheme, this bike not only looks the part but also embodies KTM's commitment to performance and innovation in the off-road segment. As a member of the renowned SX lineup, the 125 SX is engineered to dominate motocross tracks and rugged trails alike, making it a favorite among enthusiasts who crave the thrill of off-road adventures. At the heart of the 2011 KTM 125 SX is its spirited 124.80 ccm single-cylinder, two-stroke engine, designed to deliver exhilarating performance. With a bore and stroke measuring 54.0 x 54.5 mm, this powerplant is all about responsiveness. The Keihin PWK 38S AG carburetor ensures optimal fuel delivery, while the liquid cooling system keeps temperatures in check during intense rides. Coupled with a 6-speed gearbox and a wet double-disk clutch operated hydraulically, the 125 SX offers seamless gear transitions and the ability to harness its power effectively, allowing riders to tackle steep inclines and technical terrain with confidence. Whether you’re blasting through a straightaway or navigating tight corners, the bike’s lightweight build, tipping the scales at just 88.8 kg (195.8 pounds), allows for nimble handling and quick maneuverability. KTM has packed a host of features into the 125 SX that elevate the riding experience. The central double-cradle frame constructed from durable 25CrMo4 steel and an aluminum subframe provide a solid foundation without adding unnecessary weight. The WP USD 48 mm front forks and a WP PDS shock absorber offer 185 mm of travel both front and rear, ensuring that the suspension can absorb the toughest bumps and jumps with ease. Stopping power is provided by responsive single disc brakes, with a generous 260 mm diameter up front and 220 mm at the rear, giving riders the confidence to take on any terrain. The bike’s ground clearance of 385 mm (15.2 inches) and adjustable seat height of 992 mm (39.1 inches) further enhance its versatility, accommodating a wide range of rider preferences. **

Pros

  • Lightweight Performance: Weighing just 88.8 kg, the 125 SX is incredibly nimble, making it easy to handle in challenging off-road conditions.
  • Responsive Power Delivery: The two-stroke engine and well-tuned carburetor provide impressive acceleration and a thrilling ride experience.
  • Advanced Suspension: With 185 mm of travel in both the front and rear suspension, the bike offers exceptional comfort and control over rough terrain.

Cons

  • Limited Fuel Capacity: The 7.50-litre tank may require more frequent stops on longer rides compared to competitors with larger tanks.
  • Kick Starter Only: While nostalgic for some, the absence of an electric start can be less convenient for riders in challenging situations.
  • High Seat Height: At 992 mm, the seat height may be daunting for shorter riders, potentially affecting confidence and control.

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, operated hydraulically
Gearbox
6-speed
Ignition
Kokusan
Driveline
13:50. Primary drive: 23:73.
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
Exhaust System
Aluminium
Lubrication System
Mixture oil lubrication 1:40
Transmission Type Final Drive
Chain
Dry Weight
88.8 kg (195.8 pounds)
Seat Height
992 mm (39.1 inches) If adjustable, lowest setting.
Fuel Capacity
7.50 litres (1.98 gallons)
Ground Clearance
385 mm (15.2 inches)
Rake
26.5°
Wheels
1.60 x 21in., 2.15 x 19in. Excel
Rear Tyre
100/90-19
Frame Type
Central
double-cradle-type 25
Mo4
.
Subframe
:
Aluminium
.
Front Tyre
80/100-21
Rear Brakes
Single disc
Front Brakes
Single disc
Rear Suspension
WP PDS shock absorber
Front Suspension
WP USD 48 mm (1.89 in)
Rear Wheel Travel
185 mm (7.3 inches)
Front Wheel Travel
185 mm (7.3 inches)
Rear Brakes Diameter
220 mm (8.7 inches)
Front Brakes Diameter
260 mm (10.2 inches)

Available colors

Orange/black/white