Make Model: BSA Rocket Gold Star
Year: 1962 – 63
Production: 1584 units
Engine: Four stroke, parallel twin cylinder, OHV
Capacity: 646 cc / 39.4 cub in.
Bore x Stroke: 70 x 84 mm
Carburetor: Amal Monobloc
Cooling System: Air cooled
Compression Ratio: 9.1:1
Lubrication: Dry sump
Exhaust: Single, stainless steel
Ignition: Lucas magdyno
Starting: Kick start
Max Power: 34 kW / 46 hp @ 6250 rpm Optional RRT 2 close ratio gearbox: 37 kW / 50 hp
Clutch: Multi-plate with built-in cush drive
Transmission: 4 Speed
Final Drive: Chain
Frame: Welded seamless steel tubing with duplex downtubes and full cradle engine support, bolted-on rear sub frame
Front Suspension: Telescopic forks with coil spring – hydraulically damped
Rear Suspension: Swinging arm, twin coil
Front Brakes: Drum, 8 in.
Rear Brakes: Drum, 7 in.
Wheels: Shouldered alloy wheels, wire spokes
Front Tyre: 3.25 x 19 in.
Rear Tyre: 4.00 x 19 in.
Dimensions: Length: 2100 mm / 84.0 in.
Wheelbase: 1391 mm / 54.75 in.
Dry Weight: 143 kg / 315 lbs
Fuel Capacity: 16 L / 4.2 US gal
Top Speed: 185 km/h / 115 mph
Colours: Silver/chrome, Red/chrome
Source: Wikipedia, Vintage Motorcycles Online, Bar Hopper Challenge, Classic Auctions