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Technical Overview
2004 GAS GAS SM 50 Technical Analysis & Specification Breakdown
Built around GAS GAS's super motard motorcycle platform, the 2004 GAS GAS SM 50 relies on a 49 cc (3 cu in) liquid-cooled single cylinder, two-stroke powerplant. Internal engine geometry specifies a bore and stroke of 40.0 x 39.2 mm (1.6 x 1.5 inches).
On the scales, the SM 50 measures 93 kg (205 lbs) dry. Rider ergonomics and chassis geometry center around a 920 mm (36.2 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,475 mm (58.1 in) wheelbase engineered for balanced agility and highway composure.
Standover Height
920 mm (36.2 in)
Engine
Displacement49.0 ccm (2.99 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Bore x Stroke40.0 x 39.2 mm (1.6 x 1.5 inches)
Valves/Cylinder0
Fuel SystemCarburettor
Fuel ControlReed valve / power valve
IgnitionCDI
LubricationSeparate lubrication with automatic oil pump
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchMultiplate wet clutch in oil bath
DrivelineChain final drive
Chain Size420
Chassis
Frame TypeType deltabox, made of rectangular profile Cr-Mo
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.
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.
