Sportbikes

2016Aprilia RS4 125 Replica

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The 2016 Aprilia RS4 125 Replica is an entry-level sportbike designed for new and younger riders seeking authentic supersport styling in a manageable 125cc package. Known for its aggressive fairings, lightweight 120kg frame, and accessible 820mm seat height, it delivers accessible performance with genuine track-inspired design. The bike excels as an affordable entry point to sportbike riding with reliable braking and nimble handling characteristics.

Capacity: 124.8 ccm
Engine: Single, four-stroke
Gearbox: 6-speed
Wet weight: 120.0 kg
Seat height: 820 mm
Power: 15.0 HP (10.9 kW) @ 10500 RPM

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How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail5%

Cornering88%

City riding75%

Daily riding55%

Touring25%

Two-up15%

Track70%

Best for: Built as a miniature sportbike, it's best suited to sharp cornering, racetrack-style riding, and learning proper sportbike technique at low stakes speeds.
Built for: Aggressive sportbike styling and full fairings give it a race-replica character despite its small single-cylinder engine.
Not ideal for: Not suitable for highway touring, carrying a passenger comfortably, or riders seeking strong outright performance.

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 68.9" with a 31" (estimated) inseam will reach the ground with balls of both feet on the 2016 Aprilia RS4 125 Replica, 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: 15.0 HP (10.9 kW) @ 10500 RPM
CO2 Emissions: 3 CO2 g/km
Torque: 10.9 Nm (1.1 kgf-m) @ 8250 RPM
Engine type: Single, four-stroke
Power/weight ratio: 0.1250 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

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: 3.30 litres
Dry weight: Not on record - add it

Chassis & suspension

Frame: Aluminium perimeter frame
Front suspension: Upside down hydraulic fork
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: 218 mm
Front tyre: 110/80-R17
Rear tyre: 130/70-R17