Derbi Mulhacen 659 - 2005 Specifications and Reviews

The 2005 Derbi Mulhacen 659 is a lightweight naked bike powered by a 659cc single-cylinder four-stroke engine delivering 48.6 horsepower. Designed for novice and intermediate riders, it offers manageable performance with responsive handling thanks to its upside-down front forks and liquid cooling. This Spanish-built machine excels as an accessible, agile commuter and entry-level sport bike.

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General information

CategoryNaked bike
Year2005
ModelDerbi Mulhacen 659

Engine and Transmission Specifications

ClutchMulti-disc
Gearbox5-speed
Cooling systemLiquid
Lubrication systemOil pump
IgnitionElectronic C.D.I.
Bore x stroke100.0 x 84.0 mm (3.9 x 3.3 inches)
Compression10.0:1
Power48.60
Engine typeSingle cylinder, four-stroke
Capacity:659.00 ccm (40.21 cubic inches)

Brakes, suspension, Frame and wheels

Rear brakes diameter245 mm (9.6 inches)
Rear brakesSingle disc
Front brakes diameter320 mm (12.6 inches)
Front brakesSingle disc
Rear tyre dimensions150/70-18
Front tyre dimensions120/80-18
Rear suspension travel110 mm (4.3 inches)
Rear suspensionProgressive lateral link PLL.
Front suspension travel120 mm (4.7 inches)
Front suspensionUpside-down fork.
 
 

Physical measures and capacities

Fuel capacity9.00 litres (2.38 gallons)
Wheelbase1,370 mm (53.9 inches)
Overall width1,961 mm (77.2 inches)
Seat height800 mm (31.5 inches) If adjustable, lowest setting.
Power/weight ratio0.3038 HP/kg
Dry weight160.0 kg (352.7 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
StarterElectric

Performance Profile & Rider Fit

5.5s
0-60 mph (est.)

Best For

Track35%
City75%
Cornering72%
Daily Riding65%
Touring35%
Passenger30%

Rider Profile

Best ForThis big single-cylinder naked suits riders with at least some experience handling a torquey, thumper-style engine and a tall seat height.
PurposeBuilt primarily as an urban and backroad naked bike, favoring nimble handling over outright speed or long-distance comfort.
Rider FitThe 810mm seat height and lean 165kg dry weight demand reasonable leg length but make the bike easy to muscle around at low speeds.
CharacterIt has a raw, single-cylinder character with punchy low-end torque, a light chassis, and sharp, motard-influenced handling.
Not Ideal ForThis is not the right bike for riders seeking sustained highway speed, long-haul touring comfort, or serious off-road capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2005 Derbi Mulhacen 659 Rider Ergonomics Assessment

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Feet:

At 800mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2005 Derbi Mulhacen 659, with a relaxed knee angle of around 120 degrees and a forward-leaning riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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