At the heart of the 2004 Cagiva Raptor 650 naked motorcycle, Cagiva relies on a 645 cc (39.4 cu in) liquid-cooled twin, four-stroke powerplant. In factory specification, peak output is rated at 70 HP (51.1 kW) at 9,000 rpm while maximum torque reaches 63.5 Nm (46.8 lb-ft) at 7,400 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 108.5 HP per liter and a 1,600 rpm working window between peak torque (7,400 rpm) and peak power (9,000 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the Raptor 650 measures 180 kg (397 lbs) dry, translating to a power-to-weight ratio of 0.39 HP/kg (2.57 kg per horsepower). Rider ergonomics and chassis geometry center around a 800 mm (31.5 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance. The 19.3-liter (5.1 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Cagiva archive, this model family spans 7 indexed model years from 2001 to 2008, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
108.5 HP/L
Power-to-Weight
0.39 HP/kg (2.57 kg/HP)
Power Band Window
7,400–9,000 rpm
Standover Height
800 mm (31.5 in)
Engine
Displacement645.0 ccm (39.36 cubic inches)
Engine TypeTwin, four-stroke
Engine DetailsTwin, four-stroke
Power70.0 HP (51.1 kW)) @ 9000 RPM
Torque63.5 Nm (6.5 kgf-m or 46.8 ft.lbs) @ 7400 RPM
Compression11.5:1
Bore x Stroke81.0 x 62.6 mm (3.2 x 2.5 inches)
Valves/Cylinder4
Fuel SystemCarburettor
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
Chassis
Frame TypeHigh strength steel tubular frame
Front SuspensionUpside Down fully adjustable hydraulic fork
Front Travel120 mm (4.7 inches)
Rear SuspensionProgressive single shock with atjustable rebound - compression damping and spring preload. Double sided swingarm.
Rear Travel138 mm (5.4 inches)
Ground Clearance165 mm (6.5 inches)
Wheels & Brakes
Front Tyre120/70-17
Rear Tyre160/60-17
Front BrakesDouble disc
Front Brake Ø298 mm (11.7 inches)
Rear BrakesSingle disc
Rear Brake Ø220 mm (8.7 inches)
Dimensions & Weight
Dry Weight180.0 kg (396.8 pounds)
Power/Weight0.3889 HP/kg
Seat Height800 mm (31.5 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.
