At the heart of the 2006 Derbi GPR 50 Nude naked motorcycle, Derbi features a 49.9 cc (3 cu in) liquid-cooled single cylinder, two-stroke configuration. Internal engine geometry specifies a 11.5:1 compression ratio.
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 1,311 mm (51.6 in) wheelbase engineered for quick, flickable steering geometry. The 13-liter (3.4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Derbi archive, this model family spans 3 indexed model years from 2006 to 2009, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
800 mm (31.5 in)
Engine
Displacement49.9 ccm (3.04 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Compression11.5:1
Fuel SystemCarburettor. Dell´Ortho PHVA 14
IgnitionElectronic C.D.I.
LubricationOil pump
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveShaft drive (cardan) (final drive)
Chassis
Front SuspensionInverted fork.
Front Travel120 mm (4.7 inches)
Rear SuspensionMonoshock
Rear Travel110 mm (4.3 inches)
Wheelbase1311 mm (51.6 inches)
Wheels & Brakes
Front Tyre110/80-17
Rear Tyre130/70-17
Front BrakesSingle disc
Front Brake Ø300 mm (11.8 inches)
Rear BrakesSingle disc
Rear Brake Ø180 mm (7.1 inches)
Dimensions & Weight
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.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
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.
