Scooters

2011Aprilia SR 50 R Factory

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The 2011 Aprilia SR 50 R Factory is a sporty 50cc scooter designed for young riders and urban commuters seeking style and performance. Powered by a liquid-cooled two-stroke engine with electronic fuel injection, it delivers agile handling and reliable acceleration. Best known for combining practical automatic transmission with aggressive aesthetics and responsive engineering.

Capacity: 49.0 ccm
Engine: Single, two-stroke
Gearbox: Not on record
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Dry weight: 199.0 kg
Seat height: 820 mm
Power: 5.4 HP (4.0 kW)

⇄ Compare with another bike All model years

What’s new for the 2011 Aprilia SR 50 R Factory

vs the 2010

Spec	2010	2011
Compression	12.1:1	11.5:1

Other years 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail5%

Cornering55%

City riding88%

Daily riding65%

Touring12%

Two-up20%

Track10%

Best for: It's built for short urban hops, commuting, and running errands around town rather than any kind of serious performance riding.
Built for: It has a sporty, aggressive styling identity with racing-inspired brakes and bodywork that give it a performance-scooter attitude despite its modest 50cc output.
Not ideal for: It is not suitable for highway travel, long-distance touring, or riders seeking real straight-line speed or passenger comfort.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 820mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with balls of both feet on the 2011 Aprilia SR 50 R Factory, with a moderate knee angle of around 105 degrees and a slightly forward riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 751-820 mm — Middle Ground →

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Full specifications

Engine

Capacity: 49.0 ccm
Power: 5.4 HP (4.0 kW)
Engine type: Single, two-stroke
Power/weight ratio: 0.0271 HP/kg
Bore x stroke: 40.0 x 39.3 mm
Compression: 11.5:1
Cooling system: Liquid
Fuel system: Injection
Starting: Electric
Ignition: CDI - capacitor discharge ignition
Lubrication system: Oil injection with oil pump

Transmission

Transmission type: Automatic
Final drive: Belt
Clutch: Automatic centrifugal dry clutch

Dimensions & weight

Wheelbase: 1290 mm
Overall length: 1860 mm
Overall width: 705 mm
Overall height: 1120 mm
Seat height: 820 mm
Dry weight: 199.0 kg
Fuel capacity: 7.00 litres
Reserve fuel capacity: 1.20 litres

Chassis & suspension

Frame: Split single cradle frame in high tensile strength steel tube
Front suspension: Hydraulic fork,
Rear suspension: Engine unit acting as swingarm
Front wheel travel: 90 mm
Rear wheel travel: 70 mm

Brakes & wheels

Front brakes: Single disc
Front brakes diameter: 190 mm
Rear brakes: Single disc
Rear brakes diameter: 190 mm
Front tyre: 130/60-13
Rear tyre: 130/60-13

Other

Color options: Blue, black, silver, white

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted

Specification	2006	2008	2011	2013	2015
Capacity	49.00 ccm (2.99 cubic inches)	49.00 ccm (2.99 cubic inches)	49.00 ccm (2.99 cubic inches)	49.00 ccm (2.99 cubic inches)	—
Dry weight	—	—	199.0 kg (438.7 pounds)	—	—
Seat height	—	820 mm (32.3 inches)	820 mm (32.3 inches)	820 mm (32.3 inches)	820 mm (32.3 inches)
Fuel capacity	7.00 litres (1.85 gallons)	7.00 litres (1.85 gallons)	7.00 litres (1.85 gallons)	7.00 litres (1.85 gallons)	7.00 litres (1.85 gallons)
Color options	Aprilia Red, Aprilia Black, Aprilia White, Spiderman	—	Blue, black, silver, white	Red, black, white, orange	White, black, red