Velocette Viper (1955-68) vs MV Agusta 250 Turismo Raid (1957-60) vs BMW G 450X Factory Replica (2009)
Comparison technical specifications
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| Make: | Velocette | MV Agusta | BMW |
| Model: | Viper | 250 Turismo Raid | G 450X Factory Replica |
| Years: | 1955-68 | 1957-60 | 2009 |
| Engine: | Four stroke, single cylinder | Four stroke, single cylinder, pushrod, 2 valve | Four stroke, single cylinder, DOHC, 4 valve |
| Capacity: | 349 cc / 30.5 cub in | 246 cc / 15.0 cu-in | 449 cc / 27.4 cub. in. |
| Bore x Stroke: | 72 x 86 mm | 69 x 66 mm | 98 x 59 mm |
| Compression Ratio: | 8.0:1 | 7.2:1 | 12.0 :1 |
| Starting: | Kick start | Kick | Electric |
| Max Power: | 25 kW / 28 hp @ 7000 rpm | 8.1 kW /11.0 hp @ 5500 rpm | 30.7 kW / 41 hp @ 7000 rpm |
| Clutch: | Dry, three-plate | Wet multiple plate clutch | Multiple plate in oil bath |
| Transmission: | 4 Speed constant mesh, close ratio | 4 speed | 5 Speed |
| Final Drive: | Chain | Chain | Chain |
| Wheelbase: | 1353 mm / 53.25 in | 1340 mm / 52.7 in | 1475 mm / 58.1 in |
| Front Suspension: | Telescopic fork with hydraulic compression and rebound damping | Telescopic hydraulic fork | 45mm Upside-down forks |
| Rear Suspension: | Woodhead-Monroe springs with hydraulic damping, later Armstrong and Girling, adjustable | Swingarm with hydraulic shocks | Direct Mounted Öhlins Shock |
| Front Brakes: | 7.5 x 1.5 in., drum | 200mm Drum | Single 260mm disc, 2 piston floating caliper |
| Rear Brakes: | 7 x 1 in., drum | 200mm Drum | Single 220mm disc, 1 piston floating caliper |
| Front Tyre: | 3.25 x 19 in | 3.00-19 | 90/90-21 |
| Rear Tyre: | 3.25 x 19 in | 3.25-19 | 140/80-18 |
| Fuel Capacity: | 13.6 L / 3.6 US gal | 17 Litres / 4.5 US gal | 8 Litres / 2.1 US gal |