Positioned in Suzuki's custom - cruiser motorcycle lineup, the 2012 Suzuki Boulevard S40 relies on a 652 cc (39.8 cu in) air-cooled single cylinder, four-stroke powerplant. Internal engine geometry specifies a bore and stroke of 94.0 x 94.0 mm (3.7 x 3.7 inches) with a 10.0:1 compression ratio.
On the scales, the Boulevard S40 measures 173 kg (381 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 700 mm (27.6 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,480 mm (58.3 in) wheelbase engineered for balanced agility and highway composure. The 10.5-liter (2.8 US gal) fuel tank paired with a rated consumption of 3.73 L/100 km provides an estimated theoretical range of roughly 282 km (175 miles) between fill-ups.
Within MotoLibrary's Suzuki archive, this model family spans 17 indexed model years from 2005 to 2022, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Theoretical Range
~282 km (175 mi)
Engine
Displacement652.0 ccm (39.79 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Compression10.0:1
Bore x Stroke94.0 x 94.0 mm (3.7 x 3.7 inches)
Fuel SystemCarburettor. MIKUNI BS40, single
Fuel ControlOverhead Cams (OHC)
IgnitionElectronic ignition (transistorized)
CoolingAir
Transmission
Gearbox5-speed
Final DriveBelt (final drive)
Performance
Fuel Consumption3.73 litres/100 km (26.8 km/l or 63.06 mpg)
Greenhouse Gases86.5 CO2 g/km. (CO2 - Carbon dioxide emission)
Chassis
Front SuspensionTelescopic, coil spring, oil damped
Rear SuspensionSwing arm type, coil spring, oil damped
Wheelbase1480 mm (58.3 inches)
Ground Clearance135 mm (5.3 inches)
Wheels & Brakes
Front Tyre100/90-19
Rear Tyre140/80-15
Front BrakesSingle disc
Rear BrakesExpanding brake (drum brake)
WheelsPolished spoke wheels
Dimensions & Weight
Weight incl.173.0 kg (381.4 pounds)
Seat Height700 mm (27.6 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
