2004 GAS GAS EC Boy 50 Technical Analysis & Specification Breakdown
At the heart of the 2004 GAS GAS EC Boy 50 enduro - offroad motorcycle, GAS GAS features a 49.9 cc (3.1 cu in) liquid-cooled single cylinder, two-stroke configuration. 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 EC Boy 50 measures 42 kg (93 lbs) dry. Rider ergonomics and chassis geometry center around a 665 mm (26.2 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,005 mm (39.6 in) wheelbase engineered for quick, flickable steering geometry. The 3-liter (0.8 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's GAS GAS archive, this model family spans 2 indexed model years from 2002 to 2004, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
665 mm (26.2 in)
Engine
Displacement49.9 ccm (3.05 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Bore x Stroke39.0 x 41.8 mm (1.5 x 1.6 inches)
Fuel SystemCarburettor
CoolingLiquid
Transmission
Gearbox2-speed
Final DriveChain (final drive)
Chassis
Frame TypeCr-Mo
Front SuspensionAdjustable hydraulic fork
Front Travel140 mm (5.5 inches)
Rear SuspensionBoge hydraulic swingarm
Rear Travel155 mm (6.1 inches)
Wheelbase1005 mm (39.6 inches)
Wheels & Brakes
Front BrakesSingle disc
Front Brake Ø165 mm (6.5 inches)
Rear BrakesSingle disc
Rear Brake Ø130 mm (5.1 inches)
Dimensions & Weight
Dry Weight42.0 kg (92.6 pounds)
Seat Height665 mm (26.2 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.
