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Harley-Davidson SX 125
2018Super Moto

Harley-Davidson SX 125

Key specifications

Engine
125 cc
Power
15 HP
Torque
11 Nm
Fuel type
petrol
Fuel capacity
2.0 L
Transmission
6-speed
Seat height
35 mm
Front brakes
Single disc. Floating calliper
Rear brakes
Single disc. Floating calliper

Overview

The 2018 KTM SX 125 stands as a formidable contender in the super motard category, combining lightweight agility with race-bred performance. As a part of KTM’s renowned SX lineup, this bike is engineered for both budding riders and experienced enthusiasts looking to conquer the dirt tracks and twisty backroads alike. With its sleek, aggressive styling in a striking black, grey, and red color scheme, the SX 125 not only looks the part but is also designed to dominate the competition. At the heart of the SX 125 lies a spirited 124.80 ccm single-cylinder, four-stroke engine that churns out an impressive 15 HP at 10,500 RPM, delivering a thrilling experience on every ride. The engine's robust torque output of 10.90 Nm at 8,250 RPM ensures smooth acceleration, while the 6-speed gearbox allows for effortless shifting through the gears, giving riders the confidence to tackle various terrains. The advanced fuel injection system by Magneti Marelli, coupled with a high compression ratio of 12.5:1, enhances performance and efficiency, making this motorcycle a delight for those who crave adrenaline-fueled adventures. The SX 125 is not just about power; it’s packed with features that elevate the riding experience. The aluminum perimeter frame provides exceptional rigidity without compromising weight, tipping the scales at just 120 kg (264.6 pounds). The front suspension features a Ø 41 mm telescopic upside-down fork with 240 mm of travel, while the rear boasts a hydraulic monoshock with a progressive link system, ensuring superior handling and stability on rough terrain. With powerful braking performance from the 300 mm front disc and 220 mm rear disc, riders can confidently navigate any corner or obstacle. Plus, the electric starter adds convenience, making it easy to get back on the bike after short stops. **

Pros

  • Lightweight and Agile: Weighing just 120 kg, the SX 125 is incredibly nimble, making it perfect for tight corners and quick maneuvers.
  • Performance-Oriented Engine: The single-cylinder engine delivers exciting power and responsiveness, ideal for both racing and recreational riding.
  • Advanced Suspension System: The sophisticated suspension setup ensures excellent handling and comfort over various terrains.

Cons

  • Limited Fuel Capacity: With a fuel tank capacity of 7.50 litres (1.98 gallons), longer rides may require more frequent stops for refueling.
  • Higher Seat Height: At 880 mm (34.6 inches), the seat height may be a challenge for shorter riders, affecting accessibility.
  • Targeted Audience: As a super motard, it may not be as versatile for street riding compared to dual-sport bikes, limiting its appeal for casual riders.

Technical details

Source specification data

Make
Aprilia
Model
SX 125
Category
Super motard
Starter
Electric
Color Options
Black/grey/red
Power
15.00 HP (10.9 kW)) @ 10500 RPM
Clutch
Multi-plate in oil bath.
Torque
10.90 Nm (1.1 kgf-m or 8.0 ft.lbs) @ 8250 RPM
Ignition
Electronic with CDI capacity discharge
Driveline
Primary
drive:
Gearbox
: 63/19 (3.31).
Final
drive:
Chain
: 17/40 (2.35).
Fuel System
Injection
.
G
ø 32mm
Bore X Stroke
58.0 x 47.0 mm (2.3 x 1.9 inches)
Compression
12.5:1
Displacement
124.80 ccm (7.62 cubic inches)
Cooling System
Liquid
Engine Details
Single cylinder, four-stroke
Emission Details
Euro 4
Lubrication System
Wet sump
Valves Per Cylinder
4
Transmission Type Final Drive
Chain
Seat Height
880 mm (34.6 inches) If adjustable, lowest setting.
Fuel Capacity
7.50 litres (1.98 gallons)
Weight Incl Oil Gas Etc
120.0 kg (264.6 pounds)
Wheels
Aluminium spoked wheel.
Rear Tyre
130/70-17
Frame Type
Aluminium perimeter
Front Tyre
100/80-17
Rear Brakes
Single disc. Floating calliper
Front Brakes
Single disc. Floating calliper
Rear Suspension
Hydraulic monoshock absorber with progressive link system.
Front Suspension
Ø 41 mm telescopic upside down fork
Rear Wheel Travel
220 mm (8.7 inches)
Front Wheel Travel
240 mm (9.4 inches)
Rear Brakes Diameter
220 mm (8.7 inches)
Front Brakes Diameter
300 mm (11.8 inches)

Available colors

Black/grey/red