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The Aprilia SR 50 is universally recognised as the scooter to beat, as sales of over 800,000 units show. The SR has become a legend in its own time. It is also the scooter most in demand by young riders and all those who have a passion for sport and the world of motorcycle racing. More than a scooter, the SR is a way of life.

The best is not good enough for Aprilia! Research is continuous and unstoppable and the epoch-making innovations only recently introduced on Aprilia's technological flagship, the RSV 1000, have already made their appearance on the new SR too. The SR resembles the RSV 1000 R Factory not just in appearance but in technical solutions too.

Engine type: Liquid cooled horizontal single cylinder two stroke. Electronic direct fuel injection.
Bore and stroke: 40 x 39.3 mm
Displacement: 49 cc
Compression ratio: 12.5 ± 0.5:1
Air-oil mix aspiration: Reed valve
Fuel injection: Electronically controlled, air assisted, direct injection into the combustion chamber.
Injector type: EFI low flow injector
Direct Injection system: External opening, SMD 8 micron medium spray
Pressure regulator: Pressure differential maintained at 2.5 bar
Throttle body: Ø 18 mm throttle body with integrated TPS (Throttle Position Sensor)
Air compressor: Driven off crankshaft, lubricated by air-oil mix in crank chamber
Fuel pump: 6.5 – 8 bar, high pressure pump with low electrical power absorption, < 0.5 A
Electronic Control Unit: 8 Hz clock speed, 22 pin
Ignition: High power inductive ignition
Starting: Electric
Generator: Flywheel-magneto, 165W – 12 V
Lubrication: Oil injection with oil pump
Oil tank capacity: 1.2 litres (0.2 litre reserve)
Gearbox: Continuous automatic converter
Clutch: Automatic centrifugal dry clutch
Primary drive: V belt
Final drive: Gears in oil bath
Frame: Split single cradle frame in high tensile strength steel
Front suspension: Hydraulic fork, 90 mm wheel travel
Rear suspension: Engine unit acting as swingarm; frame linkages on two radial silent block mountings; wheel travel 70 mm.
Front Brakes: 190 mm stainless steel disc; racing calliper with twin opposed 32 mm pistons.
Rear Brakes: 190 mm stainless steel disc; racing calliper with twin opposed 30 mm pistons.
Tank Capacity: 7 litres
Colours: Aprilia Red, Aprilia Black, Aprilia White, Spiderman
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