Sportbikes

2021Aprilia RS 125 GP Replica

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The 2021 Aprilia RS 125 GP Replica is a sporty 125cc single-cylinder four-stroke designed for entry-level riders seeking genuine racing aesthetics. Powered by a 15 horsepower engine with liquid cooling and electronic fuel injection, it delivers nimble performance and sharp handling characteristics. This model is best known for combining accessible lightweight dynamics with authentic GP-inspired styling, making it ideal for learners and urban commuters wanting a genuine sportbike experience.

Capacity: 124.2 ccm
Engine: Single, four-stroke
Gearbox: 6-speed
Dry weight: 129.0 kg
Seat height: 820 mm
Power: 14.8 HP (11.0 kW) @ 10000 RPM

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What’s new for the 2021 Aprilia RS 125 GP Replica

vs the 2020

Spec	2020	2021
Power	15.0 HP (11.0 kW) @ 10500 RPM	14.8 HP (11.0 kW) @ 10000 RPM
Torque	10.9 Nm (1.1 kgf-m or 8.0 ft.lbs) @ 8250 RPM	11.2 Nm (1.1 kgf-m or 8.3 ft.lbs) @ 8000 RPM
Dry weight	120.0 kg (264.6 pounds)	129.0 kg (284.4 pounds)
Front brakes	Single disc. Stainless steel disc with radial 4 piston calliper	Single disc. ABS. Stainless steel disc with radial 4 piston calliper.
Rear brakes	Single disc. Single 30 mm piston	Single disc. Single piston

Other years 2020 2021 2022 2023 2024 2025 2026 2027

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail10%

Cornering85%

City riding78%

Daily riding55%

Touring25%

Two-up20%

Track65%

Best for: Built for sharp, playful cornering and sporty commuting rather than outright speed, thanks to its featherweight chassis and small-capacity engine.
Built for: A miniature GP-styled sportbike that rewards revving the engine hard and flicking through corners rather than relying on raw power.
Not ideal for: Not suited to riders wanting strong highway overtaking power, long-distance touring comfort, or two-up riding.

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 2021 Aprilia RS 125 GP 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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Range and running costs

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Units

Currency

Fuel per litre

Riding a year

Based on the maker's published fuel consumption and tank size. Real-world figures depend on how and where you ride, and the last litres of a tank are reserve. Prices shown greyed are examples - type your own.

Full specifications

Engine

Capacity: 124.2 ccm
Power: 14.8 HP (11.0 kW) @ 10000 RPM
Torque: 11.2 Nm (1.1 kgf-m) @ 8000 RPM
Engine type: Single, four-stroke
Fuel consumption: 2.70 litres/100 km (37.0 km/l)
Power/weight ratio: 0.1147 HP/kg (dry)
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: Multiple discs, in oil bath

Dimensions & weight

Wheelbase: 1350 mm
Overall length: 1968 mm
Overall width: 760 mm
Overall height: 1135 mm
Seat height: 820 mm
Dry weight: 129.0 kg
Wet weight: 144.0 kg
Fuel capacity: 14.50 litres
Reserve fuel capacity: 4.00 litres

Chassis & suspension

Frame: Aluminium perimeter
Front suspension: 41mm Upside down hydraulic fork
Rear suspension: Asymetric swingarm. Hydraulic monoshock with adjustable spring preload.
Front wheel travel: 110 mm
Rear wheel travel: 120 mm

Brakes & wheels

Front brakes: Single disc. ABS. Stainless steel disc with radial 4 piston calliper.
Front brakes diameter: 300 mm
Rear brakes: Single disc. Single piston
Rear brakes diameter: 218 mm
ABS: Yes
Front tyre: 100/80-R17
Rear tyre: 130/70-R17

Other

Color options: Black/silver/red/green (GP Replica)
Comments: Aprilia Mia (multimedia platform) predisposition.

Specs last verified against published sources: September 2026.

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	2020	2021	2022	2024	2025	2027
Capacity	125 cc	124 cc	124 cc	124 cc	124 cc	124 cc
Dry weight	120 kg	129 kg	129 kg	129 kg	129 kg	129 kg
Seat height	820 mm	820 mm	820 mm	820 mm	820 mm	820 mm
Fuel capacity	14.5 L	14.5 L	14.5 L	14.5 L	14.5 L	14.5 L

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

Rider Reviews

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MotorcycleDB

The 2021 Aprilia RS 125 GP Replica is a stunning and powerful motorcycle that delivers an authentic racing experience. With its sleek design and powerful engine, this bike is sure to turn heads on the road. The attention to detail in replicating the aesthetics of a Grand Prix racing bike is truly impressive. The 2021 Aprilia RS 125 GP Replica is a top choice for motorcycle enthusiasts who want both performance and style.

The 2021 Aprilia RS 125 GP Replica features a 125cc engine that delivers impressive power and acceleration. With its responsive handling and advanced suspension system, this motorcycle offers a thrilling ride for riders of all levels. The replica design pays homage to Aprilia's racing heritage, making it a must-have for fans of the brand. Overall, the 2021 Aprilia RS 125 GP Replica is a high-performance motorcycle that offers an exhilarating riding experience for those who appreciate speed and style.

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