BSA A 65 Lightningback 1971 forward

Engine and transmission
Engine type: 2 cylinders, 4-stroke, Inline
Displacement: 654 cc (39.96 cubic inches)
Bore × stroke: 2.95 inch × 2.91 inch (square)
Cooling system: Air cooled
Power: 48.67 HP (35.8 kW) @ 7000 rpm
Throttle: Cable operated
Valve train: OHV, variable
Valves per cylinder: 2
Fuel and ignition
Sparks per cylinder: 1
Fuel supply system: Carburetor
Ignition type: mechanically timed
Compression: 9:1
Engine mounting: Transverse
Lubrication system: Wet sump
Gear box: Manual 4-speed
Clutch: Wet, multiple discs, cable operated
Final drive: Chain
Spark plug pipe type: NGK
Motor oil: Mineral, 10W/40
Starter: Kick-starter
Curb weight: 485 lbs
Dry weight: 445.3 lbs
Chassis and suspension
Frame type: steel, Single cradle frame
Suspension: Cartridge
Brake: Single Drum
Tire: 83 / 100 R19
Tire pressure: 0.12 PSI
Suspension: twin shock, Swingarm
Brake: Drum
Tire: 102 / 100 R19
Tire pressure: 0.14 PSI
ABS available: No
Power-to-weight ratio: 0.16 KW/lbs (6.15 lbs/HP)
Acceleration (0-60 mph): 6.4 sec
Top speed: 108.12 mph
Fuel capacity: 4.76 gals
Number of riders: 2 persons

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