Built around Derbi's minibike, cross motorcycle platform, the 2008 Derbi Dirt Kid 50 utilizes a 49.9 cc (3 cu in) air-cooled single cylinder, four-stroke layout. Internal engine geometry specifies a bore and stroke of 39.0 x 41.8 mm (1.5 x 1.6 inches).
On the scales, the Dirt Kid 50 measures 47 kg (104 lbs) dry. Rider ergonomics and chassis geometry center around a 685 mm (27 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 995 mm (39.2 in) wheelbase engineered for quick, flickable steering geometry. The 2.3-liter (0.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Derbi archive, this model family spans 2 indexed model years from 2008 to 2009, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
685 mm (27 in)
Engine
Displacement49.9 ccm (3.04 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Bore x Stroke39.0 x 41.8 mm (1.5 x 1.6 inches)
Fuel SystemCarburettor
IgnitionC.D.I.
LubricationOil pump
CoolingAir
Transmission
Gearbox1-speed
Final DriveBelt (final drive)
ClutchWet housing
Chassis
Frame TypeDouble steel beam
Front SuspensionHydraulic fork. 135 mm travel
Rear SuspensionMonoshock. 160 mm travel
Wheelbase995 mm (39.2 inches)
Wheels & Brakes
Front BrakesSingle disc
Front Brake Ø160 mm (6.3 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Ø90 mm (3.5 inches)
Dimensions & Weight
Dry Weight47.0 kg (103.6 pounds)
Seat Height685 mm (27.0 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.
