| MODEL | SUZUKI BOULEVARD S40 2017 - 2018 |
| Year | 2017 - 2018 |
| Engine Type | Four-stroke, single cylinder, SOHC, air-cooled |
| Displacement / Capacity | 652 cc / 39.8 cu in |
| Bore X Stroke | 94 x 94 mm |
| Compression Ratio | 8.5:1 |
| Cooling System | Air cooled |
| Max Power | 23 kW / 31 hp @ 5400 rpm |
| Max Torque | 50 Nm / 5.1 kgf-m / 37 lb-ft @ 3400 rpm |
| Ignition | Transistorized |
| Induction | Mikuni BS40 carburettor |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | Wet sump |
| Gear Box | 5-speed |
| Clutch | Wet, multiple discs, cable operated |
| Final Drive | Belt |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Telescopic 38 mm forks, coil springs, oil damped; 140 mm / 5.5 in travel |
| Rear Suspension | Twin shock, 5-way adjustable spring preload; 80 mm / 3.1 in travel |
| Front Brakes | 265 mm single disc |
| Rear Brakes | Drum, rod operated |
| DIMENSION SPECS | |
| Overall Length | 2180 mm / 85.8 in |
| Overall Width | 720 mm / 28.3 in |
| Overall Height | 1105 mm / 43.5 in |
| Seat Height | 700 mm / 27.6 in |
| Wheelbase | 1480 mm / 58.3 in |
| Ground Clearance | 135 mm / 5.3 in |
| Dry Weight | 160 kg / 352 lb |
| Wet Weight | 172 kg / 380 lb |
| WHEEL SPECS | |
| Front Tyre | 100/90-19 57H, tube type |
| Rear Tyre | 140/80-15 67H, tube type |
| FUEL SYSTEM | |
| Fuel Capacity | 10.5 litres / 2.6 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The late-2010s S40, still a 652 cc single-cylinder cruiser with belt drive and air cooling. Its chassis and engine figures match the rest of the S40 line, so changes were mostly in styling and colours. It remained the smallest and simplest model in the Boulevard range.
