Harley-Davidson SX 250 1977

Air cooled, 243cc, Single, 2-stroke, Piston controlled inlet port

Engine and transmission Switch unit
Engine type:	1 cylinders, 2-stroke, Single
Displacement:	243 cc (14.85 cubic inches)
Bore × stroke:	2.83 inch × 2.35 inch (oversquare - shortstroke)
Cooling system:	Air cooled
Power:	19.85 HP (14.6 kW) @ 7000 rpm
Throttle:	Cable operated
Valves
Valve train:	Piston controlled inlet port, variable
Fuel and ignition
Sparks per cylinder:	1
Fuel supply system:	Carburetor
Compression:	10.3:1
Engine mounting:	Transverse
Gear box:	Manual 5-speed
Clutch:	Wet, multiple discs, cable operated
Final drive:	Chain

Dimensions
Weight
Curb weight:	275.6 lbs
Chassis and suspension
Frame type:	steel, Double cradle frame
Front
Suspension:	Cartridge
Brake:	Drum
Tire:	83 / R19
Rear
Suspension:	twin shock, Swingarm
Brake:	Drum
Tire:	100 / R18
Other
ABS available:	No
Power-to-weight ratio:	0.12 KW/lbs (8.56 lbs/HP)
Top speed:	71.46 mph
Fuel capacity:	2.77 gals
Number of riders:	2 persons

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