BSA Thunderbolt
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The BSA Thunderbolt is a 650cc, twin cylinder, four stroke, street motorcycle manufactured by BSA in the 1960s and 1970s.
Specifications
- Displacement: 654.00 ccm (39.91 cubic inches)
- Engine type: Twin
- Stroke: 4
- Power: 46.00 HP (33.6 kW)) @ 7000 RPM
- Compression: 9.0:1
- Bore x stroke: 75.0 x 74.0 mm (3.0 x 2.9 inches)
- Valves per cylinder: 2
- Fuel control: OHV
- Cooling system: Air
- Gearbox: 4-speed
- Transmission type final drive: Chain
1969
1972