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Yamaha GX250 - generations and specs | MOTOVULKAN
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GX250
Yamaha · Model
— GX250
GX250
3 generations
1977 - 1980
·
Naked
FRAME · —
1977+
248cc · 25 hp · 1977
FRAME · 2U3
1978 - 1979
248cc · 25 hp · 1978-1979
FRAME · 4A8
1980+
248cc · 25 hp · 1980
Yamaha GX250 1980
About generation 4A8
1980
Years
1980+
Frame codes
4A8
Class
Naked
Specifications
10 groups
General
2
Market
Japanese domestic (JDM)
Manufacturer
YAMAHA
Engine
18
Bore
55 mm
Cooling
Air-cooled
Power
25 hp
Fuel type
Regular (low-octane)
Power RPM
9,500 rpm
Stroke
52.4 mm
Cylinders
2
Torque RPM
8,500 rpm
Fuel system
Carburetor
Engine type
4-stroke
Torque (kgf·m)
1.9 kgf·m
Valvetrain
SOHC
Lubrication
Wet sump
Cylinder layout
Inline
Displacement
248 cc
Fuel system model
BS32×2
Compression ratio
9.6
Valves per cylinder
2
Transmission
8
Type
Return shift
Gears
6
Clutch
Wet multi-plate
Shift type
Foot shift
Final drive
Chain
Gear ratios
2.5 / 1.777 / 1.38 / 1.125 / 0.961 / 0.866
Primary reduction
3.25
Secondary reduction
2.866
Chassis
11
Frame
Semi-double cradle
Rear tire
3.50-18
Front tire
3.00-18
Front brake
Hydraulic disc
Rear shocks
2
Rear suspension
Swingarm
Front suspension
Telescopic fork
Rear tire construction
Bias
Front tire construction
Bias
Rear travel
100 mm
Front travel
140 mm
Dimensions
8
Trail
84 mm
Width
745 mm
Height
1,065 mm
Length
2,025 mm
Rake
27 °
Wheelbase
1,380 mm
Seat height
780 mm
Ground clearance
150 mm
Weight
2
Dry weight
167 kg
Seats
2
Capacities
2
Fuel tank
17 l
Engine oil (total)
2.6 l
Electrical
8
Battery
YB12A-A
Starter
Electric & kick
Ignition
Transistorized (TCI)
Spark plug
BP7ES
Spark plugs
2
Battery capacity
12V-12Ah
Taillight rating
27W/8W
Headlight rating (high)
50W/40W
Instruments
2
Tachometer
Yes
Speedometer
Analog
Performance
3
Range
782 km
Measure standard
At 50 km/h
Fuel economy
2.2 L/100km
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