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WK SX 125
2011Super Moto

WK SX 125

Key specifications

Engine
122 cc
Power
21 HP
Torque
16 Nm
Weight
115 kg
Fuel type
petrol
Fuel capacity
2.6 L
Transmission
6-speed
Seat height
33 mm
Front brakes
Single disc
Rear brakes
Single disc

Overview

Introducing the 2011 KTM SX 125, a true contender in the super motard category that perfectly embodies the spirit of lightweight agility and performance. With its impressive design and innovative engineering, this motorcycle appeals to both seasoned riders and newcomers alike. Renowned for its dirt bike heritage, the SX 125 offers a thrilling experience both on and off-road, making it a versatile choice for those who crave excitement and adventure. At the heart of the SX 125 is a spirited 122cc single-cylinder, two-stroke engine that delivers an exhilarating 21.45 HP at 9750 RPM, ensuring quick acceleration and a top speed of 115 km/h (71.5 mph). The liquid-cooled powerhouse showcases a compression ratio of 12.5:1, which enhances efficiency and responsiveness. With a 6-speed gearbox and multi-plate wet clutch, riders can seamlessly navigate through gears, making the most of the engine’s torque of 16 Nm. Whether carving through tight corners or blasting down straights, the SX 125 provides the perfect blend of power and control, ensuring an engaging ride every time. Beyond its powerful engine, the 2011 SX 125 boasts an array of features that enhance both performance and comfort. The high-strength steel frame with a double trellis beam and detachable seat frame provides exceptional rigidity while keeping weight down to a mere 115 kg (253.5 lbs). This lightweight construction, combined with a 40mm upside-down hydraulic front fork and a steel swingarm with a hydraulic monoshock, results in superb handling capabilities and a smooth ride over rough terrains. Safety is also a priority, with reliable braking systems featuring a single disc setup at both the front (260mm) and rear (220mm), ensuring that riders can stop confidently in any situation. **

Pros

  • Lightweight and Agile: At just 115 kg, the SX 125 offers an impressive power-to-weight ratio, enhancing maneuverability and responsiveness.
  • Powerful Engine Performance: The 122cc two-stroke engine delivers robust power and torque, making it an exhilarating ride for enthusiasts.
  • Superior Suspension Setup: The advanced suspension system provides excellent handling and ride comfort, whether on trails or urban streets.

Cons

  • Limited Fuel Capacity: With a fuel tank capacity of only 10 liters (2.64 gallons), long-distance rides may require frequent stops for refueling.
  • Kick Start Only: The traditional kick starter may not appeal to all riders, particularly those accustomed to electric start systems.
  • Seat Height Consideration: At 830 mm (32.7 inches), the seat height may be a challenge for shorter riders, potentially limiting accessibility.

Technical details

Source specification data

Make
Aprilia
Model
SX 125
Category
Super motard
Starter
Kick
Electrical
Generator: 12V-180W
Color Options
Black
Power
21.45 HP (15.7 kW))
Clutch
Multi-plate wet clutch.
Torque
16.00 Nm (1.6 kgf-m or 11.8 ft.lbs) @ 9750 RPM
Gearbox
6-speed
Top Speed
115.0 km/h (71.5 mph)
Engine Type
Rotax
122 engine.
Aluminium
cylinder with
Nikasil
liner.
Fuel System
Carburettor. Dell’Orto VHST 28
Bore X Stroke
54.0 x 54.5 mm (2.1 x 2.1 inches)
Compression
12.5:1
Displacement
122.00 ccm (7.44 cubic inches)
Cooling System
Liquid
Engine Details
Single cylinder, two-stroke
Lubrication System
Separate mixing with variable displacement, volumetric pump.
Transmission Type Final Drive
Chain
Dry Weight
115.0 kg (253.5 pounds)
Seat Height
830 mm (32.7 inches) If adjustable, lowest setting.
Fuel Capacity
10.00 litres (2.64 gallons)
Overall Width
850 mm (33.5 inches)
Overall Length
2,165 mm (85.2 inches)
Power Weight Ratio
0.1865 HP/kg
Reserve Fuel Capacity
1.30 litres (0.34 gallons)
Wheels
Aluminium
Rear Tyre
150/60-17
Frame Type
High
strength steel frame with double trellis beam and double cradle.
Detachable
seat frame.
Front Tyre
110/70-17
Rear Brakes
Single disc
Front Brakes
Single disc
Rear Suspension
Steel
swingarm.
Hydraulic
monoshock with piggy back cylinder.
Wheel
travel 270 mm.
Front Suspension
40 mm upside down hydraulic fork. Wheel travel 260 mm.
Rear Brakes Diameter
220 mm (8.7 inches)
Front Brakes Diameter
260 mm (10.2 inches)

Available colors

Black