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Model Type
Scooter
Model Type
Standard
MSRP
$1,599
MSRP
$5,099
Warranty
24
Warranty
24
Insurance
Insurance
Finance
Finance
Generic Type (Primary)
Scooter
Generic Type (Primary)
Standard
Manufacturer Country
South Korea
Manufacturer Country
South Korea
Manufacturer Recommend Minimum Age
16
Manufacturer Recommend Minimum Age
-
Parent Company
Hyosung
Parent Company
Hyosung
Display Name
SF 50B
Display Name
Comet GT650
Year
2006
Year
2008
Make
Hyosung
Make
Hyosung
Engine Type
Single-Cylinder
Engine Type
V Twin
Cylinders
1
Cylinders
2
Engine Stroke
2-Stroke
Engine Stroke
4-Stroke
Horsepower (bhp/kW)
3.5 / 2.5
Horsepower (bhp/kW)
76.4 / 55.8
Horsepower RPM
6800
Horsepower RPM
9000
Torque (Ft Lbs/Nm)
3.4 / 4.6
Torque (Ft Lbs/Nm)
50.2 / 68
Torque RPM
6750
Torque RPM
7000
Cooling
Air
Cooling
Liquid
Valve Configuration
Reed Valve
Valve Configuration
DOHC
Bore (mm/in)
41 / 1.62
Bore (mm/in)
81.5 / 3.21
Stroke (mm/in)
37.4 / 1.47
Stroke (mm/in)
62 / 2.44
Displacement (cc/ci)
49 / 3
Displacement (cc/ci)
647 / 39.5
Compression Ratio
7.2:1
Compression Ratio
11.6:1
Starter
Electric / Kick
Starter
Electric
Fuel Requirements
Regular
Fuel Requirements
Regular
Fuel Type
Gas / Oil Injected
Fuel Type
Gas
Carburetion Brand
Mikuni
Carburetion Brand
Mikuni
Fuel Injector
No
Fuel Injector
No
Carburetor
Yes
Carburetor
Yes
Number Of Carburetors
1
Number Of Carburetors
2
Carburetor Size (mm)
14
Carburetor Size (mm)
39
Carburetion Type
Carburetor
Carburetion Type
Carburetor
Speed Governor
No
Speed Governor
-
Valves
-
Valves
8
Valves Per Cylinder
-
Valves Per Cylinder
4
Transmission Type
Continuously Variable (CVT)
Transmission Type
Manual
Primary Drive (Engine / Transmission)
Belt
Primary Drive (Engine / Transmission)
-
Reverse
No
Reverse
No
Number Of Speeds
-
Number Of Speeds
6
Primary Drive (Rear Wheel)
-
Primary Drive (Rear Wheel)
Chain
Chromed
No
Chromed
No
Front Tire Width
120
Front Tire Width
120
Front Tire Aspect Ratio
90
Front Tire Aspect Ratio
60
Front Wheel Diameter
10
Front Wheel Diameter
17
Rear Tire Width
130
Rear Tire Width
160
Rear Tire Aspect Ratio
90
Rear Tire Aspect Ratio
60
Rear Wheel Diameter
10
Rear Wheel Diameter
17
Front Tire (Full Spec)
120 / 90-10
Front Tire (Full Spec)
120/60 ZR17 55W
Rear Tire (Full Spec)
130 / 90-10
Rear Tire (Full Spec)
160/60 ZR17 69W
Wheels Composition
-
Wheels Composition
Aluminum
Tube / Tubeless
-
Tube / Tubeless
Tubeless
Front Tire Speed Rating
-
Front Tire Speed Rating
55W
Rear Tire Speed Rating
-
Rear Tire Speed Rating
69W
Front Brake Type
Disc
Front Brake Type
Dual Disc
Front Brake Diameter (in/mm)
6.4 / 162
Front Brake Diameter (in/mm)
11.8 / 300
Rear Brake Type
Drum
Rear Brake Type
Disc
Rear Brake Diameter (in/mm)
3.9 / 100
Rear Brake Diameter (in/mm)
9.1 / 230
Front Suspension Type
Telescopic Fork
Front Suspension Type
Inverted Fork
Front Travel (in/mm)
3 / 75
Front Travel (in/mm)
4.7 / 120
Front Adjustable Fork Pre-Load
No
Front Adjustable Fork Pre-Load
Yes
Front Adjustable Rebound Damping
No
Front Adjustable Rebound Damping
Yes
Front Central Suspension Strut
No
Front Central Suspension Strut
No
Steering Damper
No
Steering Damper
No
Rear Suspension Type
Single Sided Swing Arm
Rear Suspension Type
Twin Sided Swing Arm
Rear Travel (in/mm)
2.6 / 65
Rear Travel (in/mm)
3.9 / 100
Rear Adjustable Shock / Spring Pre-Load
No
Rear Adjustable Shock / Spring Pre-Load
Yes
Rear Adjustable Rebound Damping
No
Rear Adjustable Rebound Damping
No
Number Rear Shock Absorbers
1
Number Rear Shock Absorbers
1
Air Adjustable
No
Air Adjustable
No
Front Suspension Size (in/mm)
-
Front Suspension Size (in/mm)
1.6 / 43
Rear Suspension Material
-
Rear Suspension Material
Steel
Steering Control
Handlebar
Steering Control
Handlebar
Length (ft)
6.06
Length (ft)
6.77
Width (in/mm)
25 / 635
Width (in/mm)
29.2 / 740
Height (in/mm)
44.1 / 1120
Height (in/mm)
42.9 / 1090
Wheelbase (in/mm)
50 / 1270
Wheelbase (in/mm)
56.5 / 1435
Ground Clearance (in/mm)
4.9 / 125
Ground Clearance (in/mm)
5.9 / 150
Length (ft/ft)
6
Length (ft/ft)
6
Length (ft/in)
0.7
Length (ft/in)
9.2
Dry Weight (lbs/kg)
198.4 / 90
Dry Weight (lbs/kg)
421.1 / 191
Fuel Capacity (gal/l)
1.1 / 4
Fuel Capacity (gal/l)
4.5 / 17
Engine Displacement to Weight (cc)
0.25
Engine Displacement to Weight (cc)
1.54
Fuel Capacity Reserve (gal/l)
-
Fuel Capacity Reserve (gal/l)
0.7 / 2.5
Seat Type
Two-Piece
Seat Type
Two-Piece
Adjustable
No
Adjustable
No
Seat Material
Vinyl
Seat Material
Vinyl
Seat Location
Driver and Passenger
Seat Location
Driver and Passenger
Folding
No
Folding
No
Seat Height (in/mm)
29.4 / 745
Seat Height (in/mm)
30.7 / 780
Number Of Seats
2
Number Of Seats
2
Grab Rail or Strap
Standard
Grab Rail or Strap
Standard
Frame
Steel
Frame
-
Body Material
Plastic
Body Material
-
Floor Board Location
Driver and Passenger
Floor Board Location
-
Hand Grips
Standard
Hand Grips
Standard
Chain Guard
No
Chain Guard
-
Chassis Protectors
No
Chassis Protectors
-
Drive Shaft Guard
No
Drive Shaft Guard
No
Engine Case Guard
No
Engine Case Guard
-
Fork Guards
Yes
Fork Guards
Yes
Saddle Bag Guard
No
Saddle Bag Guard
No
Tank Guard
No
Tank Guard
-
Hand Guards
No
Hand Guards
No
Brush Guard
No
Brush Guard
No
Heel Guards
No
Heel Guards
-
Exhaust Guard
Yes
Exhaust Guard
-
Light Guard
No
Light Guard
No
Side Cover
No
Side Cover
Yes
Front Fender
Standard
Front Fender
Standard
Rear Fender
Standard
Rear Fender
Standard
Stand Type
Center
Stand Type
Kick
Lower Fairing
Standard
Lower Fairing
-
Handlebars
Standard
Handlebars
Standard
License Plate
Standard
License Plate
Standard
Construction
-
Construction
Standard
Foot Peg Location
-
Foot Peg Location
Driver and Passenger
Adjustable
-
Adjustable
No
Belt Guard
-
Belt Guard
No
Top Crown
-
Top Crown
Standard
Speedometer
Standard
Speedometer
Standard
Fuel Level Warning Type
Gauge
Fuel Level Warning Type
Light
Tachometer
-
Tachometer
Standard
Trip Odometer
-
Trip Odometer
Standard
Temperature Warning Type
-
Temperature Warning Type
Gauge
Warranty (Months/Condition)
24 / Limited
Warranty (Months/Condition)
24 / Limited
Battery Warranty (Months)
0
Battery Warranty (Months)
0
Metallic
No
Metallic
-
Paint
-
Paint
Standard
Underseat Storage
Standard
Underseat Storage
Standard
Lockable Storage
Standard
Lockable Storage
Standard
Helmet Storage
Standard
Helmet Storage
-
Helmet Locks
-
Helmet Locks
Standard
Headlight Mounts
Standard
Headlight Mounts
Standard
Halogen Headlight (s)
Standard
Halogen Headlight (s)
Standard
Headlight (s)
Standard
Headlight (s)
Standard
Light Type
Halogen
Light Type
Halogen
Folding
Yes
Folding
Yes
Handlebar Lock
-
Handlebar Lock
Standard
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