Aprilia SR50

With sportsbike looks, Italian style and flair, performance and dual disc stopping power, the SR50 continues with its quality and appeal.

Engine: Liquid cooled horizontal single cylinder two stroke.

Bore and stroke: 40 x 39.3 mm.

Displacement: 49 cc.

Compression ratio: 11.5 : 1. Air-oil mix aspiration. Reed valve.

Fuel system: Carburettor.

Electronic Control Unit: 8 Hz clock speed, 22 pin.

Ignition: High power inductive ignition.

Starting: Electric.

Generator: Flywheel-magneto, 165 W – 12 V.

Lubrication: Oil injection with oil pump.

Oil tank capacity: 1.2 litres (0.2 litre reserve).

Gearbox: Continuous automatic variator.

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 tube.

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. Rear: 190 mm stainless steel disc; racing caliper with twin

opposed 30 mm pistons.

Wheels: Five spoke, light alloy wheels front and rear: 3.50 x 13”.

Tyres: Tubeless. Front and rear: 130/60 x 13”.

Dimensions: Overall length: 1860 mm. Overall width: 705 mm. Overall height: 1120 mm.

Seat height: 820 mm. Wheelbase: 1290 mm.

Tank capacity: 7 litres.