| MODEL | VELOCETTE VENOM THRUXTON 1965 - 1970 |
| Year | 1965 - 1970 |
| Engine Type | Four stroke, single cylinder, OHV |
| Displacement / Capacity | 499 cc / 30.5 cu in |
| Bore X Stroke | 86 x 86 mm |
| Compression Ratio | 9.0:1 |
| Cooling System | Air cooled |
| Max Power | 31 kW / 41 hp @ 6200 rpm |
| Max Torque | — |
| Ignition | Miller D6 with automatic volt regulation (later coil ignition) |
| Induction | Amal 5GP2 carburettor |
| Start System | Kick start |
| TRANSMISSION SPECS | |
| Lubrication | Dry sump |
| Gear Box | 4 Speed constant mesh, close ratio |
| Clutch | Dry, three-plate |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Single down-tube with twin bottom rails |
| Front Suspension | Telescopic fork with hydraulic damping and an offset wheel spindle |
| Rear Suspension | Woodhead-Monroe springs with hydraulic damping, later Armstrong and Girling, adjustable |
| Front Brakes | 7.5 x 1.5 in drum |
| Rear Brakes | 7 x 1 in drum |
| DIMENSION SPECS | |
| Overall Length | 2130 mm / 84.0 in |
| Overall Width | 700 mm / 27.5 in |
| Overall Height | 990 mm / 39.0 in |
| Seat Height | 775 mm / 30.5 in |
| Wheelbase | 1365 mm / 53.75 in |
| Ground Clearance | 140 mm / 5.5 in |
| Dry Weight | 170 kg / 375 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.00 x 19 in, ribbed |
| Rear Tyre | 3.50 x 19 in, studded |
| FUEL SYSTEM | |
| Fuel Capacity | 19.3 Litres / 5.1 US gal |
| Fuel Consumption | 3.9 L/100 km / 60 US mpg |
| Top Speed | 193 km/h / 120 mph |
The Thruxton was the race-bred Venom, introduced to fill the gap left by the BSA Gold Star. It had a reworked cylinder head, a big Amal GP carburettor and revised cam followers, and the tank needed a cutaway for the carburettor. Only 1108 were built, and it won the 1967 Production TT.
