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Aprilia RS4 125
2018Sportbike

Aprilia RS4 125

Key specifications

Engine
125 cc
Power
15 HP
Torque
11 Nm
Fuel type
petrol
Fuel capacity
3.8 L
Transmission
6-speed
Seat height
32 mm
Front brakes
Single disc. Stainless steel disc with radial 4 piston calliper
Rear brakes
Single disc. Single 30 mm piston

Overview

Introducing the 2018 Aprilia RS4 125, a vibrant blend of Italian racing pedigree and cutting-edge technology designed for both novice riders and seasoned enthusiasts. As a lightweight sportbike in the 125cc category, the RS4 125 stands out with its aggressive styling and purposeful engineering, making it an ideal entry point for those looking to dive into the exhilarating world of motorcycling. With its eye-catching color options and sporty silhouette, the RS4 125 doesn’t just promise performance; it delivers a thrilling experience that is sure to ignite a passion for riding. At the heart of the RS4 125 lies a spirited single-cylinder, four-stroke engine with a displacement of 124.80 cc. Producing a robust 15 horsepower at an exhilarating 10,500 RPM, this powerplant is finely tuned for spirited acceleration, enabling riders to navigate urban landscapes and twisty backroads with confidence. The engine's torque output of 10.90 Nm at 8,250 RPM ensures a peppy ride, while the 6-speed gearbox allows for seamless gear changes, enhancing the overall riding experience. The combination of liquid cooling and a high compression ratio of 12.5:1 ensures that the RS4 125 remains responsive and efficient, even on longer rides. The 2018 RS4 125 is not just about raw performance; it’s equipped with features that underscore its sporty character and rider-friendly design. The aluminum perimeter frame provides a lightweight yet rigid foundation, promoting agility and precision in handling. The upside-down hydraulic forks and asymmetrical swingarm with monoshock rear suspension work in harmony to absorb bumps and enhance stability, ensuring a smooth ride no matter the terrain. Safety is paramount, and the RS4 125 features a robust braking system with a 300 mm front disc and a 218 mm rear disc, providing strong stopping power when needed. Additionally, the integrated Magneti Marelli M3G fuel injection system ensures optimal fuel delivery for peak performance, while the sleek design and comfortable seat height of 820 mm cater to a wide range of riders. Whether you're a newcomer eager to learn the ropes or an experienced rider seeking a fun, nimble machine, the Aprilia RS4 125 is designed to deliver an exhilarating ride with an unmistakable Italian flair.

Pros

  • Performance-Oriented Engine: The powerful 124.80 cc engine with 15 HP is perfect for spirited riding and urban commuting.
  • Agile Handling: The lightweight aluminum frame and advanced suspension setup provide excellent maneuverability and responsiveness.
  • Stylish Design: With its sporty aesthetics and vibrant color options, the RS4 125 turns heads and makes a statement on the road.

Cons

  • Limited Power for Highways: While ideal for city riding, the 125cc engine may struggle on highways or during longer trips compared to larger-displacement bikes.
  • Rider Comfort: The sporty riding position may not be suitable for all riders, especially on extended journeys.
  • Fuel Capacity: At 14.50 liters, the fuel tank might require more frequent stops on long rides, potentially limiting travel range.

Technical details

Source specification data

Make
Aprilia
Model
RS4 125
Category
Sport
Starter
Electric
Instruments
Analogue
/digital multifunction dashboard with
D
display
Color Options
Black/red, silver/red
Power
15.00 HP (10.9 kW)) @ 10500 RPM
Clutch
Multi-plate in oil bath.
Torque
10.90 Nm (1.1 kgf-m or 8.0 ft.lbs) @ 8250 RPM
Ignition
Electronic with CDI capacity discharge
Driveline
Primary
drive:
Gearbox
: 63/19 (3.31).
Final
drive:
Chain
: 17/40 (2.35).
Fuel System
Injection
.
G
ø 32mm
Bore X Stroke
58.0 x 47.0 mm (2.3 x 1.9 inches)
Compression
12.5:1
Displacement
124.80 ccm (7.62 cubic inches)
Cooling System
Liquid
Engine Details
Single cylinder, four-stroke
Emission Details
Euro 4
Lubrication System
Wet sump
Valves Per Cylinder
4
Transmission Type Final Drive
Chain
Seat Height
820 mm (32.3 inches) If adjustable, lowest setting.
Fuel Capacity
14.50 litres (3.83 gallons)
Overall Width
740 mm (29.1 inches)
Overall Length
1,955 mm (77.0 inches)
Reserve Fuel Capacity
3.50 litres (0.92 gallons)
Weight Incl Oil Gas Etc
120.0 kg (264.6 pounds)
Wheels
Light alloy with 6 split spokes
Rear Tyre
130/70-17
Frame Type
Aluminium perimeter
Front Tyre
110/80-17
Rear Brakes
Single disc. Single 30 mm piston
Front Brakes
Single
disc.
Stainless
steel disc with radial 4 piston calliper
Rear Suspension
Asymmetric swingarm with monoshock
Front Suspension
Upside down hydraulic fork, 40 mm.
Rear Wheel Travel
120 mm (4.7 inches)
Front Wheel Travel
110 mm (4.3 inches)
Rear Brakes Diameter
218 mm (8.6 inches)
Front Brakes Diameter
300 mm (11.8 inches)

Available colors

Black/redsilver/red