At the heart of the 2008 Pro-One Vapor custom - cruiser motorcycle, Pro-One features a 1983 cc (121 cu in) v2, four-stroke configuration. In factory specification, peak output is rated at 100 HP (73 kW) at 5,300 rpm while maximum torque reaches 121.2 Nm (89.4 lb-ft) at 4,200 rpm, transferring power to the rear wheel through a 6-speed gearbox and belt final drive. With a specific output of 50.4 HP per liter and a 1,100 rpm working window between peak torque (4,200 rpm) and peak power (5,300 rpm), the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the Vapor measures 310.3 kg (684 lbs) dry, translating to a power-to-weight ratio of 0.32 HP/kg (3.1 kg per horsepower). Rider ergonomics and chassis geometry center around a 635 mm (25 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 2,083 mm (82 in) wheelbase engineered for planted straight-line stability. The 15.14-liter (4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
50.4 HP/L
Power-to-Weight
0.32 HP/kg (3.1 kg/HP)
Power Band Window
4,200–5,300 rpm
Standover Height
635 mm (25 in)
Engine
Displacement1983.0 ccm (121.00 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsV2, four-stroke
Power100.0 HP (73.0 kW)) @ 5300 RPM
Torque121.2 Nm (12.4 kgf-m or 89.4 ft.lbs) @ 4200 RPM
Compression8.2:1
Fuel SystemCarburettor. Mikuni
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionCrank-triggered electronic ignition
Transmission
Gearbox6-speed
Final DriveBelt (final drive)
Performance
ExhaustChrome exhaust with heat shields
Chassis
Rake40.0°
Front SuspensionHard-chrome fork tubes
Rear SuspensionClassic Softail® style, powder coated swing arm with flush mounted rear axle covers
Wheelbase2083 mm (82.0 inches)
Wheels & Brakes
Front BrakesSingle disc
Front Brake Ø292 mm (11.5 inches)
Rear BrakesSingle disc
Rear Brake Ø292 mm (11.5 inches)
Dimensions & Weight
Dry Weight310.3 kg (684.0 pounds)
Power/Weight0.3223 HP/kg
Seat Height635 mm (25.0 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.
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.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
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.
