Positioned in Motobi's scooter motorcycle lineup, the 2004 Motobi Velvet 400 relies on a 383.4 cc (23.4 cu in) liquid-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 28 HP (20.5 kW) at 7,000 rpm while maximum torque reaches 30.3 Nm (22.3 lb-ft) at 5,500 rpm. With a specific output of 73 HP per liter and a 1,500 rpm working window between peak torque (5,500 rpm) and peak power (7,000 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 Velvet 400 measures 140 kg (309 lbs) dry, translating to a power-to-weight ratio of 0.2 HP/kg (5 kg per horsepower). Rider ergonomics and chassis geometry center around a 810 mm (31.9 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,450 mm (57.1 in) wheelbase engineered for balanced agility and highway composure. The 11.7-liter (3.1 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
73 HP/L
Power-to-Weight
0.2 HP/kg (5 kg/HP)
Power Band Window
5,500–7,000 rpm
Standover Height
810 mm (31.9 in)
Engine
Displacement383.4 ccm (23.39 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power28.0 HP (20.5 kW)) @ 7000 RPM
Torque30.3 Nm (3.1 kgf-m or 22.3 ft.lbs) @ 5500 RPM
Bore x Stroke86.0 x 66.0 mm (3.4 x 2.6 inches)
Valves/Cylinder4
CoolingLiquid
Chassis
Front Travel97 mm (3.8 inches)
Rear Travel105 mm (4.1 inches)
Wheelbase1450 mm (57.1 inches)
Wheels & Brakes
Front Tyre120/70-13
Rear Tyre140/70-12
Front BrakesSingle disc
Front Brake Ø240 mm (9.4 inches)
Rear BrakesSingle disc
Rear Brake Ø220 mm (8.7 inches)
Dimensions & Weight
Dry Weight140.0 kg (308.6 pounds)
Power/Weight0.2001 HP/kg
Seat Height810 mm (31.9 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.
