50cc may not sound like a whole lot for an engine considering there are more powerful engines for bikes in the market, but there’s still a market for it. And as far as being one of the top dogs in the world of 50cc supersport motorcycles, the Aprilia RS 50 offers all the things you need in a bike of its size.
You might find it surprising that a bike like the RS 50 comes with lightweight wheels, radial calipers, an aluminum frame and swingarm, and an under-seat exhaust, but that’s what Aprilia has done with this bike. In the simplest of words, the RS 50 is a genuine sports motorcycle that comes packed with the sort of technology normally found only on a GP racer. Its eye-catching, racing lines and determined, aggressive shape tell you that the Aprilia RS 50 knows no compromise.
This 50 cc supersport is made to thrill and has all the performance needed to do so, thanks in part to a surprisingly powerful 50cc liquid cooled, single cylinder two stroke engine that offers the very latest design and technology, allowing it to deliver exceptional performance (6.25 kW at 10,000 rpm) for its size.
As far as style is concerned, the RS 50 draws inspiration from the flagship model of the Aprilia family, the RSV 1000 R, the very same twin that beat Japanese four cylinder racers to win the 2006 Master Bike trophy. Using the same technology used on the powerful RSV, Aprilia was able to build a 50cc bike that all other bikes in its segment fear the most.
Find out more about the Aprilia RS 50 after the jump.
A performance chassis demands an engine to match. The RS 50 is therefore equipped with an advanced engine of the latest generation, in the form of a single cylinder, liquid cooled, two stroke powerplant with read valve induction and an anti-vibration balancer shaft. The very latest design and technology enables this new engine to deliver exceptional performance (6.25 kW at 10,000 rpm) for its size and weight (only 15 kg). Lubrication is provided by a separate mixing system, incorporating a variable displacement volumetric pump. Starting is electric. The gearbox is a six speed unit, to make the most of the engine’s exceptional power.
The aggressive lines of the new RS 50 are enhanced by a new, wind tunnel tested fairing, with a sporty modern design. This fairing is very similar to that of the RS 125 which won the 2006 Design Award.
Twin headlights give superior visibility and contribute to the aggressive racing styling of this incredible 50.
A streamlined, slender tail completes the Aprilia RS 50’s racing image and also hides the expansion chamber of the under-seat exhaust, another feature taken from the world of racing, that dramatically improves balance and weight distribution.
A 13 liter fuel tank and miserly fuel consumption mean that the Aprilia RS 50 has an amazing autonomy. Even the new tank shape conveys the bike’s racing spirit: the tank appears to sit on the twin beam frame just like the tanks of genuine GP racers.
Aprilia was the first manufacturer to make a 50 cc motorcycle with an aluminum frame. The new RS 50 takes things one step further, with a light alloy, reinforced, extruded tube frame for better than ever performance. This revolutionary frame not only reduces overall weight but offers a new level of structural rigidity. Even the swingarm is made from a prestige light alloy and is damped by a hydraulic monoshock with adjustable spring preload, giving a wheel travel of 110 mm.
The upside down fork is another important feature of the RS 50. This extremely advanced fork is totally safe and reliable while offering amazing performance in terms of sliding action and damping. The 40 mm stanchions are the same size as on many big bikes, and wheel travel is a generous 120 mm, making the bike’s powerful braking system even more effective .
Aprilia has set new standards in braking technology and performance too. The record diameter 300 mm front disc is braked by a radial caliper, a solution first introduced by Aprilia in 250 cc GP racing, and subsequently copied on all racing bikes. This impressive braking system enables the new RS 50 to tackle GP style braking in total safety.
Even the back brake is a high performance unit, featuring a 180 mm stainless steel disc and a powerful two piston caliper on a special aluminum bracket.
The new ‘Y’ spoke wheels share the same design as those fitted to Aprilia GP racers. These lightweight, precision-balanced wheels combine with the latest generation of high performance tires to give amazing road holding on bends.
On top of all this, the lucky RS 50 owner benefits from a whole range of prestige components normally only found on far bigger machines. Take, for example, the aluminum brake and clutch levers, aluminum footrest brackets, high level silencer and tubeless radial tyres. Aprilia has even fitted the RS 50 with an advanced multi-functional instrument panel. This compact analog-digital unit acts as a real on-board computer. In addition to all the usual parameters and functions, it also incorporates a built-in lap timer to enable the champions of tomorrow to record their best track times.
|Engine||Liquid cooled, single cylinder two stroke|
|Fuel||Dell’Orto PHVA - Ø14|
|Bore x Stroke||39,86 x 40 mm|
|Total displacement||49,9 cc|
|Compression ratio||11,5 :1|
|Maximum power at the crank||Electronic C.D.I.|
|Maximum torque at the crank||Electric|
|Gear box||6 speed. Ratios: 1st 11/34; 2nd 15/30; 3rd 18/27; 4th 20/24; 5th 22/23; 6th 23/22|
|Primary drive||Gears. Ratio: 21/78|
|Final drive||Chain. Ratio: 14/53|
|Frame||Aluminum twin beam frame with extruded profiles and internal reinforcement|
|Front suspension||40 mm upside down fork; wheel travel 120 mm|
|Rear suspension||Double reinforced member aluminum swingarm with bracing arch; hydraulic monoshock; wheel travel 110 mm|
|Brakes||Front: radial caliper with two 28 mm opposed pistons; 300 mm stainless steel disc; aeronautical braided brake hose Rear: 180 mm stainless steel disc; caliper with two 25 mm opposed pistons; aeronautical braided brake hose|
|Wheels||Light alloy 6 ‘Y’ spoke wheels with tubeless rims. Front: 2.75 x 17" Rear: 3.50 x 17"|
|Tires||Front: 110/80 - 17" Rear: 130/70 - 17"|
|Dimensions||Overall length 1965 mm Overall width 720 mm Max height at windshield 1.100 mm Seat height 810 mm Wheelbase 1,310.5 mm|
|Fuel tank capacity||13 litres|
|Carburetor||Dell’Orto PHVA - Ø14|
|Battery||12V – 4Ah|
Bikez----"The design of the fairings and tank, the unique looks of the front end, with the headlights suspended over the gaping air intakes, and the spectacular tapered tail fairing are identical to their counterparts on V4 1000 cc supersports model that set new standards in terms of style and technical content for the superbike segment."