|Also called||SF50, SF 50, SF50 Racing, SF 50 Racing, SF50 Rally, SF 50 Rally, SF 50R Rally, SF50B, SF 50B, SF50B Prima, SF50R Rally|
|Production||2005 - 2011|
single cylinder, two-stroke
|Bore / Stroke||41.0mm x 37.4mm|
|Top Speed||28 mph (45 km/h)|
|Horsepower||4.83 HP (3.6 KW) @ 7000RPM|
|Torque||2.8 ft/lbs (3.8 Nm) @ 6500RPM|
|Transmission||Gear box: automatic
Final Drive: belt
|Suspension||Front: conventional telescopic
Rear: mono shock absorber (preload adjustable)
|Brakes||Front: single disc
Rear: expanding brake (drum brake)
|Wheelbase||2.01 inches (51 mm)|
|Length||72.4 inches (1839 mm)|
|Width||25.0 inches (635 mm)|
|Height||46.69 inches (1186 mm)|
|Seat Height||29.02 inches (737 mm)|
|Weight||194.01 pounds (88.0 Kg) (dry), 88.0 kg (wet)|
|Fuel Capacity||1.25 Gallon (4.73 Liters)|
The Hyosung SF50B Prima was a single cylinder, two-stroke scooter produced by Hyosung between 2005 and 2011. It could reach a top speed of 28 mph (45 km/h). Max torque was 2.8 ft/lbs (3.8 Nm) @ 6500 RPM. Claimed horsepower was 4.83 HP (3.6 KW) @ 7000 RPM.
The bike has a automatic transmission. Power was moderated via the centrifugal automatic clutch.
It came with a 110/70-12 front tire and a 120/70-12 rear tire. Stopping was achieved via single disc in the front and a expanding brake (drum brake) in the rear. The front suspension was a conventional telescopic while the rear was equipped with a mono shock absorber (preload adjustable). The SF50B Prima was fitted with a 1.25 Gallon (4.73 Liters) fuel tank. The bike weighed just 194.01 pounds (88.0 Kg). The wheelbase was 2.01 inches (51 mm) long.
2010 Hyosung SF50R Rally
The 2010 MY Hyosung SF50R Rally has, at its heart, an air-cooled, two-stroke, 49cc, single cylinder lump paired to a continuously variable transmission, that can produce 5 horsepower and 4 Nm of torque. Unlike its SF50B sibling, this machine has a more youthful, race-inspired visual appearance, with race decals and bold colors, and is sure to fit the taste of the more adventurous and young among riders. It comes standard with a dual seat, passenger grab rails, a front disc brake, and an under-storage compartment.
2010 Hyosung SF50B
The 2010 MY Hyosung SF50B sports an air-cooled, two-stroke, 49cc, single cylinder powerhouse mated to a continuously variable transmission (CVT) and can produce 5 horsepower and 4 Nm of torque. Standard features include passenger pegs, a dual seat, a large under-seat storage compartment, a free flowing exhaust system, a modern instrumentation panel, and lightweight, cast-aluminum wheels.
2011 Hyosung SF50B
The 2011 MY Hyosung SF50B sports an air-cooled, two-stroke, 49cc, single cylinder lump paired to a continuously variable transmission, and can produce 5 horsepower and 4 Nm of torque. This agile scooter is suitable for one's daily commute inside the concrete jungle, being easy-to-park, fuel-efficient and capable of tackling narrow alleyways. It comes standard with passenger pegs, a two-up seat, passenger grab rails, an under-seat storage compartment and 12" wheels.