BSA A65 Thunderbolt Make Model | BSA A65 Thunderbolt | Year | 1964 | Engine | Air cooled. four stroke, parallel twin, OHV, 2 valve per cylinder. | Capacity | 654 | Bore x Stroke | 75 x 74 mm | Compression Ratio | 9.0:1 | Induction | | Ignition / Starting | | Max Power | 49 hp 35.8 KW @ 7000 rpm | Max Torque | | Transmission / Drive | | Front Suspension | | Rear Suspension | | Front Brakes | Drum | Rear Brakes | Drum | Front Tyre | 3.25-19 | Rear Tyre | 4.00-19 | Dry-Weight | | Fuel Capacity | | |