Yamaha XJ 650back 1981 forward

Air cooled, 653cc, Inline-4, DOHC

Power: 70.43 HP (51.8 kW) @ 9400 rpm
Final drive: Shaft
Top speed: 122.41 mph
Curb weight: 509.3 lbs
Tags: Classic bike
Engine and transmission
Engine type: 4 cylinders, 4-stroke, Inline
Displacement: 653 cc (39.9 cubic inches)
Bore × stroke: 2.48 inch × 2.06 inch (oversquare - shortstroke)
Cooling system: Air cooled
Power: 70.43 HP (51.8 kW) @ 9400 rpm
Throttle: Cable operated
Valves
Valve train: DOHC, variable
Valves per cylinder: 2
Fuel and ignition
Sparks per cylinder: 1
Fuel supply system: Carburetor
Compression: 9.2:1
Engine mounting: Transverse
Lubrication system: Wet sump
Gear box: Manual 5-speed
Clutch: Wet, multiple discs, cable operated
Final drive: Shaft
Starter: Electric
Dimensions
Weight
Curb weight: 509.3 lbs
Chassis and suspension
Frame type: steel, Double cradle frame
Front
Suspension: Cartridge
Brake: Twin Disk
Rear
Suspension: mono shock, Swingarm
Brake: Drum
Tire: 120 / 90 R18
Other
ABS available: No
Power-to-weight ratio: 0.22 KW/lbs (4.46 lbs/HP)
Top speed: 122.41 mph
Fuel capacity: 5.42 gals
Number of riders: 2 persons

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