| 
					Technical specifications
					
				 | 
			
				| Model: | 650 Prototype | 
			
				| Years: | 1967 | 
			
			
					
						| Engine: | Four stroke, parallel twin cylinder. | 
			
					
						| Capacity: | 653 | 
			
					
						| Bore x Stroke: | 75 x 74 mm | 
			
					
						| Cooling System: | Air cooled | 
			
					
						| Compression Ratio: | 9.0:1 | 
			
					
						| Induction: | 2x 28mm Dell'Orto carburetors | 
			
					
						| Starting: | Kick | 
			
					
						| Max Power: |  | 
			
					
						| Max Torque: |  | 
			
					
						| Transmission: | 5 Speed | 
			
					
						| Final Drive: | Chain | 
			
					
						| Front Suspension: | Marzocchi telescopic forks | 
			
					
						| Rear Suspension: | Swinging arm dual shocks | 
			
					
						| Front Brakes: | 2x 180mm drum | 
			
					
						| Rear Brakes: | Drum | 
			
					
						| Front Tyre: | 3.50-18 | 
			
					
						| Rear Tyre: | 4.00-18 | 
			
					
						| Wet Weight: | 218 kg | 
			
					
						| Fuel Capacity: |  | 
			
					
						| Manuals: | 668/Diamante parts manual - legend / - legend / 650/Formula parts manual - legend / 650/Formula parts manual - legend / 668 Strike/Ghost/Legend parts manual - legend |