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Yamaha GR80 - generations and specs | MOTOVULKAN
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GR80
Yamaha · Model
— GR80
GR80
2 generations
1976 - 1979
·
Road
FRAME · —
1976 - 1979
72cc · 5.9 hp · 1976-1979
FRAME · 374
1977+
72cc · 5.9 hp · 1977
Yamaha GR80 1977
About generation 374
1977
Years
1977+
Frame codes
374
Class
Road
Specifications
10 groups
General
3
Market
Japanese domestic (JDM)
Model code
374
Manufacturer
YAMAHA
Engine
16
Bore
47 mm
Cooling
Air-cooled
Power
5.9 hp
Fuel type
Regular (low-octane)
Power RPM
7,000 rpm
Stroke
42 mm
Cylinders
1
Torque RPM
6,500 rpm
Engine code
374
Fuel system
Carburetor
Engine type
2-stroke
Torque (kgf·m)
0.61 kgf·m
Lubrication
Separate oil injection (2T)
Cylinder layout
Single cylinder
Displacement
72 cc
Compression ratio
6.8
Transmission
10
Type
Return shift
Gears
5
Clutch
Wet multi-plate
Shift type
Foot shift
Final drive
Chain
Gear ratios
3.25 / 2 / 1.428 / 1.125
Rear sprocket
41
Front sprocket
15
Primary reduction
3.578
Secondary reduction
2.733
Chassis
16
Frame
Double cradle
Rear tire
2.50-14
Front tire
2.50-14
Rear brake
Drum (leading-trailing)
Front brake
Drum (leading-trailing)
Rear rim width
1.4
Rear tire type
Tube type
Front rim width
1.4
Front tire type
Tube type
Rear shocks
2
Rear suspension
Swingarm
Front suspension
Telescopic fork
Rear ply rating
4PR
Front ply rating
4PR
Rear tire construction
Bias
Front tire construction
Bias
Dimensions
8
Trail
68 mm
Width
590 mm
Height
850 mm
Length
1,585 mm
Rake
63.5 °
Wheelbase
1,045 mm
Seat height
635 mm
Ground clearance
125 mm
Weight
2
Dry weight
65.5 kg
Seats
2
Capacities
2
Fuel tank
7 l
2T oil tank
1.5 l
Electrical
8
Battery
6N4-2A-2
Starter
Kick starter
Ignition
Magneto
Spark plug
B7HS
Spark plugs
1
Battery capacity
6Ｖ-4Ａｈ
Taillight rating
10/3W
Headlight rating (high)
25Ｗ/25
Instruments
1
Speedometer
Analog
Performance
5
Range
525 km
Rear tire pressure
2.3 kgf/cm²
Front tire pressure
1.5 kgf/cm²
Measure standard
At 30 km/h
Fuel economy
1.3 L/100km
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