Engineered by Derbi for the scooter motorcycle segment, the 2012 Derbi GP1 50 utilizes a 49.4 cc (3 cu in) liquid-cooled single cylinder, two-stroke layout. Internal engine geometry specifies a bore and stroke of 40.0 x 39.3 mm (1.6 x 1.5 inches) with a 10.5:1 compression ratio.
On the scales, the GP1 50 measures 115 kg (254 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 835 mm (32.9 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,330 mm (52.4 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 4 indexed model years from 2006 to 2012, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
835 mm (32.9 in)
Engine
Displacement49.4 ccm (3.01 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Compression10.5:1
Bore x Stroke40.0 x 39.3 mm (1.6 x 1.5 inches)
Fuel SystemCarburettor. 17.5 mm
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionElectronic C.D.I.
LubricationSeparate mixing with mechanical oil pump
CoolingLiquid
Transmission
GearboxAutomatic
Final DriveChain (final drive)
ClutchAutomated twist and go
DrivelineAutomatic CVT
Chassis
Frame TypeAluminium beam frame
Front SuspensionInverted fork
Front Travel80 mm (3.1 inches)
Rear SuspensionAluminium swingarm with single spring-damper
Rear Travel70 mm (2.8 inches)
Wheelbase1330 mm (52.4 inches)
Wheels & Brakes
Front Tyre120/70-14
Rear Tyre140/60-13
Front BrakesSingle disc. Radially-mounted two-piston caliper
Front Brake Ø190 mm (7.5 inches)
Rear BrakesSingle disc. Single piston
Rear Brake Ø175 mm (6.9 inches)
Dimensions & Weight
Dry Weight103.0 kg (227.1 pounds)
Weight incl.115.0 kg (253.5 pounds)
Seat Height835 mm (32.9 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.
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.
