2015 Suzuki Boulevard M109R B O S S Technical Analysis & Specification Breakdown
Engineered by Suzuki for the custom - cruiser motorcycle segment, the 2015 Suzuki Boulevard M109R B O S S utilizes a 1783 cc (108.8 cu in) liquid-cooled v2, four-stroke layout. In factory specification, peak output is rated at 125 HP (91.2 kW) at 6,200 rpm while maximum torque reaches 160 Nm (118 lb-ft) at 3,200 rpm, transferring power to the rear wheel through a 5-speed gearbox and shaft drive (cardan) final drive. With a specific output of 70.1 HP per liter and a 3,000 rpm working window between peak torque (3,200 rpm) and peak power (6,200 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the Boulevard M109R B O S S measures 347 kg (765 lbs) wet (curb), translating to a power-to-weight ratio of 0.36 HP/kg (2.78 kg per horsepower). Rider ergonomics and chassis geometry center around a 705 mm (27.8 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,710 mm (67.3 in) wheelbase engineered for planted straight-line stability. The 18.55-liter (4.9 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Suzuki archive, this model family spans 10 indexed model years from 2014 to 2023, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
70.1 HP/L
Power-to-Weight
0.36 HP/kg (2.78 kg/HP)
Power Band Window
3,200–6,200 rpm
Standover Height
705 mm (27.8 in)
Engine
Displacement1783.0 ccm (108.80 cubic inches)
Engine TypeV2, four-stroke
Engine Details54-degree V-Twin
Power125.0 HP (91.2 kW)) @ 6200 RPM
Torque160.0 Nm (16.3 kgf-m or 118.0 ft.lbs) @ 3200 RPM
Compression10.5:1
Bore x Stroke112.0 x 90.5 mm (4.4 x 3.6 inches)
Valves/Cylinder4
Fuel SystemInjection
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionElectronic ignition
CoolingLiquid
Transmission
Gearbox5-speed
Final DriveShaft drive (cardan) (final drive)
DrivelineConstant mesh
Performance
Exhaust2-into-1-into-2 stainless steel chromed exhaust system
Chassis
Frame TypeHigh-tensile double cradle steel frame
Front SuspensionInverted telescopic, coil spring, oil damped
Front Travel130 mm (5.1 inches)
Rear SuspensionLink type, oil damped, coil spring
Rear Travel118 mm (4.6 inches)
Wheelbase1710 mm (67.3 inches)
Ground Clearance130 mm (5.1 inches)
Wheels & Brakes
Front Tyre130/70-R18
Rear Tyre240/40-R18
Front BrakesDouble disc
Front Brake Ø310 mm (12.2 inches)
Rear BrakesSingle disc
Rear Brake Ø275 mm (10.8 inches)
Dimensions & Weight
Weight incl.347.0 kg (765.0 pounds)
Seat Height705 mm (27.8 inches) If adjustable, lowest setting.
Overall Length2450 mm (96.5 inches)
Overall Width875 mm (34.4 inches)
Fuel Capacity18.55 litres (4.90 US gallons)
Other
StarterElectric
Color OptionsPearl Bracing White/Glass Sparkle Black, Candy Daring Red/Glass Sparkle Black
Warranty1 year unlimited mileage limited warranty.
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.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
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.
