Hyosung SF50B Prima - 2011 Specifications and Reviews

The 2011 Hyosung SF50B Prima is an entry-level scooter designed for new riders and urban commuters seeking affordable, practical transportation. Known for its lightweight design, low seat height, and easy-to-use electric starter, it excels in city riding and short-distance travel. The scooter's compact dimensions and modest power delivery make it ideal for beginners building confidence on two wheels.

2011
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Engine and Transmission Specifications

DrivelineCVT
ClutchCentrifugal automatic clutch
Transmission type,final driveBelt
GearboxAutomatic
Cooling systemAir
Fuel systemCarburettor
Bore x stroke41.0 x 37.4 mm (1.6 x 1.5 inches)
Compression7.2:1
Torque3.80 Nm (0.4 kgf-m or 2.8 ft.lbs) @ 6500
Power5.00
Engine typeSingle cylinder, two-stroke
Capacity:49.00 ccm (2.99 cubic inches)
 
 

CategoryScooter
Year2011
ModelHyosung SF50B Prima
 
 

Brakes, suspension, Frame and wheels

Rear brakesExpanding brake (drum brake)
Front brakes diameter162 mm (6.4 inches)
Front brakesSingle disc
Rear tyre dimensions120/70-12
Front tyre dimensions110/70-12
Rear suspensionMono Shock Absorber (Preload adjustable)
Front suspensionConventional Telescopic

Physical measures and capacities

Fuel capacity4.73 litres (1.25 gallons)
Wheelbase51 mm (2.0 inches)
Ground clearance6 mm (0.2 inches)
Seat height29 mm (1.1 inches) If adjustable, lowest setting.
Power/weight ratio0.0568 HP/kg
Dry weight88.0 kg (194.0 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsBlue, red
Factory warranty2 Year
StarterElectric

Performance Profile & Rider Fit

5 hp
Peak Power

Best For

Track5%
City85%
Cornering30%
Daily Riding65%
Touring10%
Passenger15%

Rider Profile

Best ForSuitable for complete beginners and learner riders, including those without a full motorcycle license in many regions.
PurposeDesigned purely for short, low-speed urban commuting and running errands around town.
Rider FitVery lightweight and easy to handle, with a low seat and simple automatic operation that suits smaller or less physically strong riders.
CharacterA humble, practical little scooter that prioritizes cheap, easy, no-fuss transportation over any kind of excitement.
Not Ideal ForNot suitable for highway riding, long trips, carrying a passenger comfortably, or anyone seeking speed or performance.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Reviews

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