Categories: Aprilia

Aprilia SX 125 (2010-11)

The Aprilia SX 125 (model years 2010-11) is a motorcycle with a single cylinder two-stroke engine that meets Euro 3 standards. Its 125cc engine has a bore x stroke of 54 x 54.5 mm and a compression ratio of 12.5:1. It is liquid-cooled with a Dell Orto VHST 28 induction and electronic CDI ignition. The bike can generate a maximum power of 16.4 kW (22 hp) and a maximum torque of 16.0 Nm. It has a 6-speed transmission and chain final drive.

The Aprilia SX 125 has a high strength steel frame with double trellis beam and double cradle, as well as a separate seat frame. It has an upside-down telescopic fork with ~A40 mm front suspension and a steel swingarm with hydraulic monoshock and piggyback cylinder for the rear suspension. The bike has a front single ~A260 mm disc with a sliding 2-piston caliper and Brembo brakes, and a rear single ~A220 mm disc with a sliding 1-piston caliper. The front and rear wheel travels are 260 mm (10.2 inches) and 270 mm (10.6 inches), respectively.

Overall, the Aprilia SX 125 has a powerful engine and sturdy build quality that make for a good off-road riding experience. However, its two-stroke engine may not appeal to all riders, and some may find its styling too aggressive.


Technical specifications:

Make Model: Aprilia SX 125

Year: 2010 – 11

Engine: Single cylinder two stroke. Aluminium cylinder with Nikasil coated liner. Read valve intake. Separate mixing. Homologated to Euro 3 standard.

Capacity: 125



Bore x Stroke: 54 x 54.5 mm

Compression Ratio: 12.5:1

Cooling System: Liquid cooled

Induction: Dell Orto VHST 28

Ignition / Starting: Electronic CDI

Starting: Kick

Max Power: 16.4 kW / 22 hp

Max Torque: 16.0 Nm / 1.6 kgf-m / 11.8 ft-lb

Transmission: 6 Speed

Final Drive: Chain

Gear Ratio: 1st 10:30 / 2nd 14:29 / 3rd 17:27 / 4th 19:25 / 5th 21:23 / 6th 22:21

Frame: High strength steel frame with double trellis beam and double cradle. Separate seat frame.

Front Suspension: Upside down telescopic fork, ~A40 mm


Front Wheel Travel: 260 mm / 10.2 in

Rear Suspension: Steel swingarm. Hydraulic monoshock with piggy back cylinder

Rear Wheel Travel: 270 mm / 10.6 in

Front Brakes: Single ~A260 mm disc, sliding 2 piston caliper, Brembo

Rear Brakes: Single ~A220 mm disc, sliding 1 piston caliper
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