Positioned in Derbi's allround motorcycle lineup, the 2009 Derbi Mulhacen 125 features a 124.2 cc (7.6 cu in) liquid-cooled engine configuration. In factory specification, peak output is rated at 20.1 HP (14.7 kW) at 9,250 rpm, transferring power to the rear wheel through a 6-speed gearbox. With a specific output of 161.9 HP per liter, the engine character is placing it firmly in high-revving supersport territory where top-end breathing dominates.
On the scales, the Mulhacen 125 measures 110 kg (243 lbs) dry, translating to a power-to-weight ratio of 0.18 HP/kg (5.47 kg per horsepower). Rider ergonomics and chassis geometry center around a 750 mm (29.5 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1 mm (0 in) wheelbase engineered for quick, flickable steering geometry. The 11-liter (2.9 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Derbi archive, this model family spans 5 indexed model years from 2008 to 2012, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
161.9 HP/L
Power-to-Weight
0.18 HP/kg (5.47 kg/HP)
Standover Height
750 mm (29.5 in)
Engine
Displacement124.20 ccm (7.58 cubic inches)
Engine DetailsSingle cylinder, four-stroke
Power20.11 HP (14.7 kW)) @ 9250 RPM
Compression12.0:1
Bore x Stroke58.0 x 47.0 mm (2.3 x 1.9 inches)
Valves/Cylinder4
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
LubricationDry sump
CoolingLiquid
Transmission
Gearbox6-speed
ClutchMulti-plate in oil bath
Chassis
Frame TypeTubular High Tensile Steel
Front Suspension37 hydraulic fork. 130 mm travel
Rear SuspensionMono-shock 130 mm travel
Wheelbase1,326 mm (52.2 inches)
Wheels & Brakes
Front Tyre100/90-18
Rear Tyre130/80-17
Front BrakesSingle disc
Front Brake Ø280 mm (11.0 inches)
Rear BrakesSingle disc
Rear Brake Ø220 mm (8.7 inches)
Dimensions & Weight
Dry Weight110.0 kg (242.5 pounds)
Power/Weight0.1828 HP/kg
Seat Height750 mm (29.5 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.
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.
