At the heart of the 2007 Derbi Mulhacen 659 sport motorcycle, Derbi features a 659 cc (40.2 cu in) liquid-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 48.6 HP (35.5 kW) at 6,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 73.7 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the Mulhacen 659 measures 160 kg (353 lbs) dry, translating to a power-to-weight ratio of 0.3 HP/kg (3.29 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, combined with a 1,370 mm (53.9 in) wheelbase engineered for quick, flickable steering geometry.
Within MotoLibrary's Derbi archive, this model family spans 7 indexed model years from 2005 to 2011, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
73.7 HP/L
Power-to-Weight
0.3 HP/kg (3.29 kg/HP)
Standover Height
800 mm (31.5 in)
Engine
Displacement659.0 ccm (40.21 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power48.6 HP (35.5 kW)) @ 6000 RPM
Compression10.0:1
Bore x Stroke100.0 x 84.0 mm (3.9 x 3.3 inches)
Valves/Cylinder4
Fuel SystemInjection
IgnitionElectronic
CoolingLiquid
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Chassis
Frame TypeSingle steel beam frame
Front SuspensionInverted telescopic fork
Front Travel120 mm (4.7 inches)
Rear SuspensionProgressive single lateral monoshock
Rear Travel110 mm (4.3 inches)
Wheelbase1370 mm (53.9 inches)
Wheels & Brakes
Front Tyre120/80-18
Rear Tyre150/70-18
Front BrakesSingle disc. Ventilated
Front Brake Ø320 mm (12.6 inches)
Rear BrakesSingle disc. Ventilated
Rear Brake Ø245 mm (9.6 inches)
Dimensions & Weight
Dry Weight160.0 kg (352.7 pounds)
Power/Weight0.3038 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.
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.
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.
