Aprilia RS 125 GP Replica - 2021 Specifications and Reviews

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.

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General information

CategorySport
Year2021
ModelAprilia RS 125 GP Replica

Engine and Transmission Specifications

Emission detailsEuro 4
Greenhouse gases62.9 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel consumption2.71 litres/100 km (36.9 km/l or 86.80 mpg)
DrivelinePrimary drive: Gearbox: 63/19 (3.31). Final drive: Chain: 17/40 (2.35).
ClutchMulti-plate in oil bath.
Transmission typeChain   (final drive)
Gearbox6-speed
Cooling systemLiquid
Lubrication systemWet sump
IgnitionElectronic with CDI capacity discharge
Fuel controlDouble Overhead Cams/Twin Cam (DOHC)
Fuel systemInjection. Magneti Marelli M3G ø 32mm ECU
Valves per Cylinder4
Bore x Stroke58.0 x 47.0 mm (2.3 x 1.9 inches)
Compression12.5:1
Torque10.9 Nm (1.1 kgf-m or 8.0 ft.lbs) @ 8250 RPM
Power15.0 HP (10.9 kW) @ 10500 RPM
Engine typeSingle cylinder, four-stroke
Capacity:124.2 ccm (7.58 cubic inches)

Brakes, suspension, Frame and wheels

Wheels6 split spoke wheel rim in lightweight alloy
Rear brakesSingle disc. Single piston
Diameter300 mm (11.8 inches)
Front brakesSingle disc. ABS. Stainless steel disc with radial 4 piston calliper.
Rear tire130/70-R17
Front tire100/80-R17
Rear wheel travel120 mm (4.7 inches)
Rear SuspensionAsymetric swingarm. Hydraulic monoshock with adjustable spring preload.
Front wheel travel110 mm (4.3 inches)
Front Suspension41mm Upside down hydraulic fork
Frame typeAluminium perimeter
 
 

Physical measures and capacities

Reserve fuel capacity4.00 litres (1.06 US gallons)
Fuel capacity14.50 litres (3.83 US gallons)
Wheelbase1353 mm (53.3 inches)
Overall width760 mm (29.9 inches)
Overall length1968 mm (77.5 inches)
Overall height1135 mm (44.7 inches)
Seat height820 mm (32.3 inches) If adjustable, lowest setting.
Power/weight ratio0.1163 HP/kg
Weight incl. oil, gas, etc144.0 kg (317.5 pounds)
Dry weight129.0 kg (284.4 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
CommentsAprilia Mia (multimedia platform) predisposition.
StarterElectric
Color optionsBlack/silver/red/green (GP Replica)

Performance Profile & Rider Fit

14.8 hp
Peak Power
12.5s
0-60 mph

Best For

Track65%
City78%
Cornering85%
Daily Riding55%
Touring25%
Passenger20%

Rider Profile

Best ForIdeal for new or younger riders, including learner-legal license holders, taking their first steps into sportbike riding.
PurposeBuilt for sharp, playful cornering and sporty commuting rather than outright speed, thanks to its featherweight chassis and small-capacity engine.
Rider FitIts light weight and compact dimensions make it very manageable for smaller or less experienced riders, though the 820 mm seat height demands reasonable leg length.
CharacterA miniature GP-styled sportbike that rewards revving the engine hard and flicking through corners rather than relying on raw power.
Not Ideal ForNot suited to riders wanting strong highway overtaking power, long-distance touring comfort, or two-up riding.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2021 Aprilia RS 125 GP Replica Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 820mm, a rider of 175cm with a 79cm (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.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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Rider Reviews

Total comments: 1
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MotorcycleDB Review

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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