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Supermotos

2009Aprilia SX 125

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The 2009 Aprilia SX 125 is a lightweight supermotard designed for young riders and beginners seeking playful handling and agility. Its compact 122cc V-twin engine delivers spirited performance with an accessible power delivery, while the supermotard platform excels at urban riding and occasional off-road exploration. Known for excellent maneuverability and fun factor at entry level.

Capacity
122.0 ccm
Engine
Single
Gearbox
6-speed
Dry weight
115.0 kg
Seat height
830 mm
Power
21.5 HP (15.8 kW)
⇄ Compare with another bike + Add to garage All model years

What’s new for the 2009 Aprilia SX 125

vs the 2008
Spec20082009
Engine capacity 124.8 ccm (7.62 cubic inches) 122.0 ccm (7.44 cubic inches)
Power 15.0 HP (11.0 kW) 21.5 HP (15.8 kW)
Torque 12.2 Nm (1.2 kgf-m or 9.0 ft.lbs) not listed
Top speed — 115.0 km/h (71.5 mph)
Seat height 870 mm (34.3 inches) 830 mm (32.7 inches)
Front suspension Teleidraulica staple to steles turned upside down from 40mm, excursion rotates 260mm 40 mm upside down hydraulic fork. Wheel travel 260 mm.
Rear suspension Oscillating Forcellone in steel, hydraulic monoshock-absorber with piggy-back, excursion rotates 270mm Steel swingarm. Hydraulic monoshock with piggy back cylinder. Wheel travel 270 mm.
Front brakes Single disc. floating clamp to double quantity pistoncino parallel Single disc
Rear brakes Single disc. floating clamp to single pistoncino Single disc
Other years 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 8Agility 71Comfort 40Off-road 35Touring 20Road manners 65
Off-road & trail35%
Cornering80%
City riding85%
Daily riding65%
Touring20%
Two-up25%
Track30%
Best for
It's built as a nimble supermoto-styled commuter for weaving through city traffic and having fun on twisty back roads rather than for outright speed.
Built for
Playful, flickable, and eager to be thrown around corners, it rewards an energetic riding style over long-distance cruising.
Not ideal for
It's not the right choice for riders wanting highway speed, long motorway touring comfort, or serious off-road capability.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

Worked out in your browser - nothing is sent to us
At 830mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with balls of both feet on the 2009 Aprilia SX 125, with a relaxed knee angle of around 130 degrees and a forward-leaning riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

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Full specifications

Engine
Capacity
122.0 ccm
Power
21.5 HP (15.8 kW)
Engine type
Single
Power/weight ratio
0.1870 HP/kg (dry)
Compression
12.5:1
Cooling system
Liquid
Fuel system
Carburettor
Starting
Kick
Lubrication system
Separate mixing with variable displacement, volumetric pump.
Torque
Not on record - add it
Transmission
Gearbox
6-speed
Transmission type
Manual
Final drive
Chain
Clutch
Multi-plate wet clutch.
Performance
Top speed
115.0 km/h (71.5 mph)
Dimensions & weight
Wheelbase
1480 mm
Overall length
2165 mm
Overall width
850 mm
Seat height
830 mm
Dry weight
115.0 kg
Wet weight
120.0 kg
Fuel capacity
10.00 litres
Chassis & suspension
Front suspension
40 mm upside down hydraulic fork. Wheel travel 260 mm.
Rear suspension
Steel swingarm. Hydraulic monoshock with piggy back cylinder. Wheel travel 270 mm.
Brakes & wheels
Front brakes
Single disc
Rear brakes
Single disc
Front tyre
110/70-17
Rear tyre
150/60-17
Other
Color options
Black

Specs last verified against published sources: .

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted
Specification 200820092013201720222026
Capacity 125 cc 122 cc 122 cc 122 cc 125 cc 124 cc
Dry weight 115 kg 115 kg 115 kg 115 kg 115 kg 115 kg
Seat height 870 mm 830 mm 830 mm 830 mm 880 mm 880 mm
Fuel capacity 10 L 10 L 10 L 10 L 7 L 7 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

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Common questions

What is the engine size of the Aprilia SX 125?

The 2009 Aprilia SX 125 has a Capacity of 122.0 ccm (7.44 cubic inches).

What engine power does the Aprilia SX 125 have?

The 2009 Aprilia SX 125 has a Power of 21.5 HP (15.8 kW).

How many gears does the Aprilia SX 125 have?

The 2009 Aprilia SX 125 has a Gearbox of 6-speed.

How much does the Aprilia SX 125 weigh?

The 2009 Aprilia SX 125 has a Dry weight of 115.0 kg (253.5 pounds).

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