
Aprilia RS4 50
Key specifications
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)