Motorcycles Specs > Aprilia > Aprilia SX 125

Aprilia SX 125 Specs

The Aprilia SX 125 model is a Super motard bike manufactured by Aprilia . In this version sold from year 2012 , the dry weight is 115.0 kg (253.5 pounds) and it is equipped with a Single cylinder, two-stroke motor. The engine produces a maximum peak output power of 21.45 HP (15.7 kW) and a maximum torque of 16.00 Nm (1.6 kgf-m or 11.8 ft.lbs) @ 9750 RPM . With this drive-train, the Aprilia SX 125 is capable of reaching a maximum top speed of 115.0 km/h (71.5 mph) . On the topic of chassis characteristics, responsible for road holding, handling behavior and ride comfort, the Aprilia SX 125 has a High strength steel frame with double trellis beam and double cradle. Detachable seat frame. frame with front suspension being 40 mm upside down hydraulic fork. and at the rear, it is equipped with Steel swingarm. Hydraulic monoshock with piggy back cylinder. . Stock tire sizes are 110/70-17 on the front, and 150/60-17 on the rear. As for stopping power, the Aprilia SX 125 braking system includes Single disc size 260 mm (10.2 inches) at the front and Single disc size 220 mm (8.7 inches) at the back. 

Aprilia SX 125 General Information

Brand Aprilia 
Model Aprilia SX 125 
Start year 2012 
Year 2012 
Category Super motard 
Factory Warranty (Years / miles)

Aprilia SX 125 Dimensions, Aerodynamics and weight

Frame type High strength steel frame with double trellis beam and double cradle. Detachable seat frame. 
Seat details
Wheelbase 1,480 mm (58.3 inches) 
Length 2,165 mm (85.2 inches) 
Width 850 mm (33.5 inches) 
Seat Height 830 mm (32.7 inches) If adjustable, lowest setting. 
Alternate Seat Height
Ground Clearance
Trail size
Wheels details Aluminium 
Front Tyres - Rims dimensions 110/70-17 
Rear Tyres - Rims dimensions 150/60-17 
Front brakes Single disc 
Rear brakes Single disc 
Front Brakes Dimensions - Disc Dimensions 260 mm (10.2 inches) 
Rear Brakes Dimensions - Disc Dimensions 220 mm (8.7 inches) 
Curb Weight (including fluids)
Dry Weight 115.0 kg (253.5 pounds) 
Front Percentage of Weight
Rear Percentage of Weight
Weight-Power Output Ratio : 0.1865 HP/kg 
Fuel Tank Capacity 10.00 litres (2.64 gallons) 
Reserve Fuel Capacity 1.30 litres (0.34 gallons) 
Carrying Details and Capacity
Front Suspension 40 mm upside down hydraulic fork. 
Front Suspension Travel 260 mm (10.2 inches) 
Rear Suspension Steel swingarm. Hydraulic monoshock with piggy back cylinder. 
Rear Suspension Travel 270 mm (10.6 inches) 

Aprilia SX 125 Engine and Transmission Technical Data

Engine type - Number of cylinders Single cylinder, two-stroke 
Engine details Rotax 122 engine. Aluminium cylinder with Nikasil liner. 
Fuel system
Engine size - Displacement - Engine capacity 122.00 ccm (7.44 cubic inches) 
Bore x Stroke 54.0 x 54.5 mm (2.1 x 2.1 inches) 
Compression Ratio 12.5:1 
Number of valves per cylinder
Camshaft Valvetrain Configuration
Maximum power - Output - Horsepower 21.45 HP (15.7 kW) 
Maximum torque 16.00 Nm (1.6 kgf-m or 11.8 ft.lbs) @ 9750 RPM 
Engine Maximum RPM
Cooling system Liquid 
Lubrication system Separate mixing with variable displacement, volumetric pump. 
Engine oil capacity
Exhaust system
Gearbox 6-speed 
Transmission type, final drive ratio Chain 
Clutch type Multi-plate wet clutch. 

Aprilia SX 125 Performance

Top Speed 115.0 km/h (71.5 mph) 
Acceleration 0 to 100 km/h (0 to 62 mph)
Acceleration 0 to 400m (1/4 mile)
Recuperation 60 to 140 km/h in highest gear
Fuel Consumption - MPG - Economy - Efficiency
CO2 emissions
Emissions Euro 3 

Aprilia SX 125 Electrical Systems, Ignition and Equipment

Ignition Type Electronic CDI ignition. 
Electrical Details 12V 180W generator. 
Starter Type Kick 
How much horsepower does a Aprilia SX 125 have?
The Aprilia SX 125 has 21.45 HP (15.7 kW).

How fast is a Aprilia SX 125?
The Aprilia SX 125 top speed is 115.0 km/h (71.5 mph).

How much does a Aprilia SX 125 weighs?
The Aprilia SX 125 weighs 115.0 kg (253.5 pounds).

How tall (seat height) is a Aprilia SX 125?
The Aprilia SX 125 seat height is 830 mm (32.7 inches) If adjustable, lowest setting.

How many gears does a Aprilia SX 125 have?
The Aprilia SX 125 have 6 gears.