Key performance
15 ch
Power
125 cc
Displacement
120 kg
Weight
820 mm
Seat height
14.5 L
Fuel capacity
Compare the Aprilia RS4 125 with: Choose a motorcycle →
Technical specifications
Engine
- Displacement
- 125 cc
- Power
- 15.0 ch @ 10500 tr/min (10.9 kW)
- Torque
- 10.9 Nm @ 8250 tr/min
- Engine type
- Single cylinder, four-stroke
- Cooling
- Liquid
- Compression ratio
- 12.5:1
- Bore × stroke
- 58.0 x 47.0 mm (2.3 x 1.9 inches)
- Valves/cylinder
- 4
- Fuel system
- Injection. Magneti Marelli M3G ø 32mm ECU
- Valve timing
- Double Overhead Cams/Twin Cam (DOHC)
- Lubrication
- Wet sump
- Ignition
- Electronic with CDI capacity discharge
- Starter
- Electric
Chassis
- Frame
- Aluminium perimeter
- Gearbox
- 6-speed
- Final drive
- Chain (final drive)
- Clutch
- Multi-plate in oil bath.
- Front suspension
- Upside down hydraulic fork, 40 mm.
- Rear suspension
- Asymmetric swingarm with monoshock
- Front wheel travel
- 110 mm (4.3 inches)
- Rear wheel travel
- 120 mm (4.7 inches)
Brakes
- Front brakes
- Single disc. Stainless steel disc with radial 4 piston calliper
- Rear brakes
- Single disc. Single 30 mm piston
- Front tyre
- 110/80-17
- Rear tyre
- 130/70-17
Dimensions
- Seat height
- 820.00 mm
- Wheelbase
- 1350.00 mm
- Length
- 1955.00 mm
- Width
- 740.00 mm
- Fuel capacity
- 14.50 L
- Weight
- 120.00 kg
Indicators & positioning
Weight-to-power ratio
0.13 ch/kg
Torque / weight
0.09 Nm/kg
Volumetric power
120.2 ch/L
In category Sport · 62-250cc displacement (1919 motorcycles compared)
Power 15 ch Top 34%
7 ch median 13 ch 31 ch
Weight 120 kg Lighter than 78%
106 kg median 136 kg 172 kg
P/W ratio 0.13 ch/kg Top 35%
0.07 median 0.11 0.25 ch/kg
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