2013Aprilia RS4 125

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The 2013 Aprilia RS4 125 is an agile sport bike designed for entry-level riders seeking authentic sportbike styling and handling. Powered by a nimble 124cc four-stroke engine producing 16 horsepower, it delivers responsive performance ideal for commuting and weekend riding. Known for its sharp Italian design and accessible fun factor, the RS4 125 bridges the gap between casual riders and sport bike enthusiasts.

Capacity: 124.8 ccm
Engine: Single, four-stroke
Gearbox: 6-speed
Wet weight: 120.0 kg
Seat height: 820 mm
Power: 16.0 HP (11.8 kW)

⇄ Compare with another bike All model years

What’s new for the 2013 Aprilia RS4 125

vs the 2012

Spec	2012	2013
Front brakes	Single disc	Single disc. Stainless steel disc with radial 4 piston calliper
Rear brakes	Single disc	Single disc. Single 30 mm piston

Other years 2011 2012 2013 2014 2015 2016

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail10%

Cornering90%

City riding75%

Daily riding60%

Touring25%

Two-up20%

Track70%

Best for: Built as a sporty, race-replica styled machine for learning proper sportbike ergonomics and cornering technique at accessible speeds.
Built for: A nimble, high-revving little sportbike that rewards momentum-carrying, corner-focused riding rather than straight-line speed.
Not ideal for: This is not the right bike for experienced riders seeking real power, highway touring comfort, or two-up long-distance travel.

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

Will it fit you?

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Your height

Inseam (optional)

Units

At 820mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with balls of both feet on the 2013 Aprilia RS4 125, with a cramped knee angle of around 70 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.

More bikes at 751-820 mm — Middle Ground →

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Full specifications

Engine

Capacity: 124.8 ccm
Power: 16.0 HP (11.8 kW)
CO2 Emissions: 3 CO2 g/km
Engine type: Single, four-stroke
Power/weight ratio: 0.1333 HP/kg (wet)
Bore x stroke: 58.0 x 47.0 mm
Compression: 12.5:1
Cooling system: Liquid
Fuel system: Injection
Starting: Electric
Ignition: Electronic with CDI capacity discharge
Valves per cylinder: 4
Lubrication system: Wet sump
Torque: Not on record - add it

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Chain
Clutch: Multi-plate wet clutch with mechanical slip system

Dimensions & weight

Wheelbase: 1350 mm
Overall length: 1955 mm
Overall width: 740 mm
Overall height: 1138 mm
Seat height: 820 mm
Wet weight: 120.0 kg
Fuel capacity: 14.50 litres
Reserve fuel capacity: 3.50 litres
Dry weight: Not on record - add it

Chassis & suspension

Frame: Aluminium perimeter frame
Front suspension: Upside down hydraulic fork, 40 mm.
Rear suspension: Swingarm. Hydraulic monoshock with adjustable spring preload.
Front wheel travel: 110 mm
Rear wheel travel: 130 mm

Brakes & wheels

Front brakes: Single disc. Stainless steel disc with radial 4 piston calliper
Front brakes diameter: 300 mm
Rear brakes: Single disc. Single 30 mm piston
Rear brakes diameter: 220 mm
Front tyre: 110/80-R17
Rear tyre: 130/70-R17