The BSA A65 Spitfire Special, also called Mk IV, is a four-stroke, parallel twin-cylinder motorcycle that was produced from 1966 to 1968. It has a capacity of 654cc and uses Amal Concentric 389/206 carburetors. The engine has a compression ratio of 9.0:1, is air-cooled, and uses dry sump lubrication. The bike has a 4-speed transmission and a multi-plate clutch with heavy-duty springs. The maximum power output is 40.0 kW / 53 hp at 7000 rpm. The frame is made of steel tubing with a double cradle and it has telescopic forks with coil spring suspension in the front and a coil spring/hydraulically damped suspension in the rear. The front and rear brakes are drum brakes with the front being 20.32 cm / 8 in. and twin leading shoe. The wheels are made of steel and have wire spokes with a front rim of WM2-19 and a rear of WM2-18. The bike has a wet weight of 185kg / 408 lbs and a fuel capacity of 18L / 4.8 US gal in Europe and 9 L / 2 US gal in the US. Its top speed is 212 km/h / 132 mph. The BSA A65 Spitfire Special is a classic motorcycle that has been reviewed positively on classicbsamotorcycles.co.uk.
Make Model: BSA A65 Spitfire Special (Mk IV)
Year: 1966 – 68
Engine: Four stroke, parallel twin cylinder, OHV, 2 valves per cylinder
Capacity: 654 cc / 39.9 cub in.
Bore x Stroke: 75 x 74 mm
Carburetors: Amal Concentric 389/206
Cooling System: Air cooled
Compression Ratio: 9.0:1
Lubrication: Dry sump
Engine Oil: SAE 20W/50
Oil Capacity: 3 L / 5 pints / 0.79 US gal
Ignition: Coil, 3ET Lucas, Alternator RM19ET Lucas
Spark Plug: Champion N4
Battery: 12V, 10 a.h., Lucas RM19
Starting: Kick start
Max Power: 40.0 kW / 53 hp @ 7000 rpm
Clutch: Multi-plate with heavy duty springs
Transmission: 4 Speed
Final Drive: Chain
Gear Ratio: 1st 9.30 / 2nd 6.73 / 3rd 5.07 / 4th 4.58:1
Frame: Steel tubing, double cradle
Front Suspension: Telescopic forks with coil spring – hydraulically damped
Rear Suspension: Coil spring/hydraulically damped
Front Brakes: 20.32 cm / 8 in., drum, twin leading shoe
Rear Brakes: 17.78 cm / 7 in., drum
Wheels: Steel, wire spokes
Front Rim: WM2-19
Rear Rim: WM2-18
Front Tyre: 3.25 x 19 in.
Rear Tyre: 4.00 x 18 in.
Dimensions: Length: 2165 mm / 85.3 in. Height: 1117 mm / 44.0 in.
Wheelbase: 1410 mm / 55.5 in.
Ground Clearance: 203 mm / 8.0 in.
Seat Height: 813 mm / 32 in.
Wet Weight: 185 kg / 408 lbs
Fuel Capacity: Europe:18 L / 4.8 US gal US: 9 L / 2 US gal
Top Speed: 212 km/h / 132 mph
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