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					Technical specifications
					
				 | 
			
				| Model: | Boulevard S40 | 
			
				| Years: | 2011-12 | 
			
			
					
						| Engine: | Four stroke, single cylinder, SOHC | 
			
					
						| Capacity: | 652 cc / 39.8 cu-in | 
			
					
						| Bore x Stroke: | 94 x 94.0 mm | 
			
					
						| Cooling System: | Air cooled | 
			
					
						| Compression Ratio: | 8.5:1 | 
			
					
						| Lubrication: | Wet sump | 
			
					
						| Induction: | Mikuni BS40 | 
			
					
						| Ignition: | Transistorized | 
			
					
						| Starting: | Electric | 
			
					
						| Max Power: | 23 kW / 31 hp @5400 rpm | 
			
					
						| Max Torque: | 50 Nm / 5.1 kgf-m / 37 lb-ft @3400 rpm | 
			
					
						| Clutch: | Wet, multiple discs, cable operated | 
			
					
						| Transmission: | 5 Speed | 
			
					
						| Final Drive: | Belt | 
			
					
						| Front Suspension: | Telescopic 38 mm stanchions, coil spring, oil damped | 
			
					
						| Front Wheel Travel: | 140 mm / 5.5 in | 
			
					
						| Rear Suspension: | Twin shock, 5-way adjustable spring preload | 
			
					
						| Rear Wheel Travel: | 80 mm / 3.1 in | 
			
					
						| Front Brakes: | 265 mm Single disc | 
			
					
						| Rear Brakes: | Drum, rod operated | 
			
					
						| Front Tyre: | 100/90-19 57H, tube type | 
			
					
						| Rear Tyre: | 140/80-15 67H, tube type | 
			
					
						| Rake: | 35° | 
			
					
						| Trail: | 147 mm / 5.8 in | 
			
					
						| Dimensions: | Length 2180 mm / 85.8 in Width 720 mm / 28.3 in Height 1105 mm / 43.5 in | 
			
					
						| Wheelbase: | 1480 mm / 58.3 in | 
			
					
						| Seat Height: | 700 mm / 27.6 in | 
			
					
						| Ground Clearance: | 135mm / 5.3 in | 
			
					
						| Dry Weight: | 160 kg / 352 lbs | 
			
					
						| Wet Weight: | 172 kg / 380 lbs | 
			
					
						| GVWR: | 356 kg / 785 lbs | 
			
					
						| Fuel Capacity: | 10.5 Litres / 2.6 US gal |