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Aprilia RS4 50
2011Sportbike

Aprilia RS4 50

Key specifications

Engine
50 cc
Fuel type
petrol
Fuel capacity
3.8 L
Transmission
6-speed
Seat height
32 mm
Front brakes
Single disc
Rear brakes
Single disc

Overview

Introducing the 2011 Aprilia RS4 50, a striking entry in the sport motorcycle category that embodies the spirit of racing while catering to both new riders and seasoned enthusiasts. With its lightweight frame and aggressive styling, the RS4 50 is a perfect blend of performance and design, ensuring it stands out in a crowd. Positioned as an ideal starter bike, it also offers a thrilling experience for those looking for an agile ride that can weave through city traffic with ease. This model is a testament to Aprilia's racing heritage, designed to provide both style and substance for riders who crave excitement. At the heart of the RS4 50 lies a potent 49.90cc single-cylinder, two-stroke engine, which is both nimble and responsive. With a compression ratio of 11.5:1 and a sophisticated Dell’Orto PHVA 17.5 carburettor, this engine delivers a spirited performance that is sure to ignite the passion of every rider. The 6-speed gearbox allows for seamless transitions through gears, offering exhilarating acceleration and a dynamic riding experience. Whether you’re navigating tight corners or cruising down open roads, the liquid-cooled engine maintains optimal performance, ensuring you remain in control and comfortable on your journey. The RS4 50 isn’t just about power; it’s also rich in features and technology. The twin-spar aluminum frame provides a lightweight yet sturdy foundation that enhances stability and cornering precision. The front suspension boasts a 40mm upside-down fork, while the rear features an asymmetric swingarm with a monoshock, delivering a smooth ride with impressive travel. Additionally, the motorcycle comes equipped with reliable braking systems, including a 300mm front disc and a 180mm rear disc, ensuring you can stop as confidently as you accelerate. The electric start adds a layer of convenience, and with vibrant color options like red/black and white/black, you can find a model that reflects your personal style. **

Pros

  • Lightweight and Agile: The compact design and minimal weight make it an ideal choice for city commuting and novice riders.
  • Performance Oriented: The responsive two-stroke engine and 6-speed gearbox provide an exhilarating ride with quick acceleration.
  • Quality Suspension and Braking: Upside-down forks and disc brakes enhance handling and safety, making it a reliable choice for spirited riding.

Cons

  • Small Engine Size: While perfect for beginners, some experienced riders may find the 50cc engine limiting for long-distance touring.
  • Two-Stroke Maintenance: The two-stroke engine may require more frequent maintenance compared to four-stroke counterparts, which can be a consideration for some.
  • Seat Height: At 820mm, the seat height may be challenging for shorter riders, limiting accessibility for a broader range of enthusiasts.

Technical details

Source specification data

Make
Aprilia
Model
RS4 50
Category
Sport
Starter
Electric
Electrical
Battery: 12V – 6Ah
Color Options
Red/black, white/black
Clutch
Multi-plate
Gearbox
6-speed
Ignition
Elettronica C.D.I.
Driveline
Primary
drive:
Gears
.
Ratio
: 21/78.
Final
drive:
Chain
.
Ratio
: 14/53
Fuel System
Carburettor. Dell’Orto PHVA – 17.5
Bore X Stroke
39.9 x 40.0 mm (1.6 x 1.6 inches)
Compression
11.5:1
Displacement
49.90 ccm (3.04 cubic inches)
Cooling System
Liquid
Engine Details
Single cylinder, two-stroke
Emission Details
Euro 2
Lubrication System
Automatic mixer
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
1,953 mm (76.9 inches)
Wheels
light alloy with 6 split spokes, with sealing profile for tubeless tyres
Rear Tyre
130/70-17
Frame Type
Twin spar aluminium frame
Front Tyre
110/80-17
Rear Brakes
Single disc
Front Brakes
Single disc
Rear Suspension
Asymmetric swingarm with monoshock
Front Suspension
40 mm upside down fork
Rear Wheel Travel
130 mm (5.1 inches)
Front Wheel Travel
110 mm (4.3 inches)
Rear Brakes Diameter
180 mm (7.1 inches)
Front Brakes Diameter
300 mm (11.8 inches)

Available colors

Red/blackwhite/black