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Yamaha YB125 - generations and specs | MOTOVULKAN
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YB125
Yamaha · Model
— YB125
YB125
2 generations
1974 - 1980
·
Naked
FRAME · —
1974+
123cc · 11 hp · 1974
FRAME · 1R0
1976 - 1980
123cc · 11 hp · 1976-1980
Yamaha YB125 1976-1980
About generation 1R0
1976-1980
Years
1976 - 1980
Frame codes
1R0
Class
Naked
Specifications
10 groups
General
3
Market
Japanese domestic (JDM)
Model code
1R0
Manufacturer
YAMAHA
Engine
17
Bore
56 mm
Cooling
Air-cooled
Power
11 hp
Fuel type
Regular (low-octane)
Power RPM
6,500 rpm
Stroke
50 mm
Cylinders
1
Torque RPM
5,500 rpm
Engine code
1R0
Fuel system
Carburetor
Engine type
2-stroke
Torque (kgf·m)
1.2 kgf·m
Lubrication
Separate oil injection (2T)
Cylinder layout
Single cylinder
Displacement
123 cc
Fuel system model
VM20SH
Compression ratio
6.4
Transmission
8
Type
Rotary shift
Gears
4
Clutch
Wet multi-plate
Shift type
Foot shift
Final drive
Chain
Gear ratios
3.181 / 1.812 / 1.25 / 1
Primary reduction
3.894
Secondary reduction
2.187
Chassis
16
Frame
Double cradle
Rear tire
3.00-16
Front tire
3.00-16
Rear brake
Drum (leading-trailing)
Front brake
Drum (leading-trailing)
Rear rim width
1.6
Rear tire type
Tube type
Front rim width
1.6
Front tire type
Tube type
Rear shocks
2
Rear suspension
Swingarm
Front suspension
Telescopic fork
Rear ply rating
6PR
Front ply rating
4PR
Rear tire construction
Bias
Front tire construction
Bias
Dimensions
9
Trail
76 mm
Width
750 mm
Height
1,050 mm
Length
1,910 mm
Rake
27.5 °
Wheelbase
1,250 mm
Seat height
750 mm
Ground clearance
135 mm
Turning radius
2.5 m
Weight
2
Dry weight
109 kg
Seats
2
Capacities
2
Fuel tank
11 l
2T oil tank
1.2 l
Electrical
6
Starter
Electric & kick
Spark plug
B6HS
Spark plugs
1
Battery capacity
12V-6Ah
Taillight rating
27W/8W
Headlight rating (high)
35W/25W
Instruments
1
Speedometer
Analog
Performance
5
Range
550 km
Rear tire pressure
2.5 kgf/cm²
Front tire pressure
1.5 kgf/cm²
Measure standard
At 50 km/h
Fuel economy
2 L/100km
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