BSA Thunderbolt

The BSA Thunderbolt is a 650cc, twin cylinder, four stroke, street motorcycle manufactured by BSA in the 1960s and 1970s.

1966 BSA Thunderbolt

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

1969 BSA Thunderbolt 650 in Red

1969 BSA Thunderbolt 650 in Red

1969 BSA Thunderbolt 650 in Red

1969 BSA Thunderbolt 650 in Red

1972

1972 BSA Thunderbolt in Red

1972 BSA Thunderbolt in Red

1972 BSA Thunderbolt in Red

1972 BSA Thunderbolt in Red

1972 BSA Thunderbolt in Red

1972 BSA Thunderbolt in Red

1972 BSA Thunderbolt in Red

1972 BSA Thunderbolt in Red