Built around Aprilia's sport motorcycle platform, the 2023 Aprilia RS 125 GP Replica pairs a 124.2 cc (7.6 cu in) liquid-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 15 HP (10.9 kW) at 10,500 rpm while maximum torque reaches 11.2 Nm (8.3 lb-ft) at 8,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 120.8 HP per liter and a 2,500 rpm working window between peak torque (8,000 rpm) and peak power (10,500 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the RS 125 GP Replica measures 144 kg (317 lbs) wet (curb), translating to a power-to-weight ratio of 0.1 HP/kg (9.6 kg per horsepower). Rider ergonomics and chassis geometry center around a 820 mm (32.3 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,353 mm (53.3 in) wheelbase engineered for quick, flickable steering geometry. The 14.5-liter (3.8 US gal) fuel tank paired with a rated consumption of 2.6 L/100 km provides an estimated theoretical range of roughly 558 km (347 miles) between fill-ups.
Within MotoLibrary's Aprilia archive, this model family spans 4 indexed model years from 2020 to 2023, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
120.8 HP/L
Power-to-Weight
0.1 HP/kg (9.6 kg/HP)
Power Band Window
8,000–10,500 rpm
Theoretical Range
~558 km (347 mi)
Engine
Displacement124.2 ccm (7.58 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power15.0 HP (10.9 kW)) @ 10500 RPM
Torque11.2 Nm (1.1 kgf-m or 8.3 ft.lbs) @ 8000 RPM
Compression12.6:1
Bore x Stroke58.0 x 47.0 mm (2.3 x 1.9 inches)
Valves/Cylinder4
Fuel SystemInjection
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionECU Electronics Magneti Marelli MIUG4 ø 32 mm
LubricationWet sump
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchMulti-plate in oil bath.
Performance
Fuel Consumption2.60 litres/100 km (38.5 km/l or 90.47 mpg)
Greenhouse Gases60.3 CO2 g/km. (CO2 - Carbon dioxide emission)
Emission DetailsEuro 5
Chassis
Frame TypeAluminium perimeter
Front SuspensionUpside down hydraulic fork, 40 mm
Front Travel110 mm (4.3 inches)
Rear SuspensionAsymetric swingarm. Hydraulic monoshock with adjustable spring preload.
Rear Travel120 mm (4.7 inches)
Wheelbase1353 mm (53.3 inches)
Wheels & Brakes
Front Tyre100/80-17
Rear Tyre140/70-ZR17
Front BrakesSingle disc. ABS. Stainless steel disc with radial 4 piston calliper
Front Brake Ø300 mm (11.8 inches)
Rear BrakesSingle disc. ABS. Single 30 mm piston
Rear Brake Ø220 mm (8.7 inches)
WheelsLight alloy with 6 split spokes
Dimensions & Weight
Weight incl.144.0 kg (317.5 pounds)
Seat Height820 mm (32.3 inches) If adjustable, lowest setting.
Overall Height1135 mm (44.7 inches)
Overall Length1968 mm (77.5 inches)
Overall Width760 mm (29.9 inches)
Fuel Capacity14.50 litres (3.83 US gallons)
Reserve Fuel3.30 litres (0.87 US gallons)
Other
StarterElectric
Color OptionsBlack/red
Notes
Quick Shift electronic gear change. Passenger seat cover. Small windscreen.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
