These are the known mechanical and performance specifications for your 2009 GAS GAS EC 250 Six-Days.
Basic Specs

Engine
Displacement249.30 ccm (15.21 cubic inches)
Type
DetailsSingle cylinder, two-stroke
Max RPM
Compression
Bore/Stroke66.4 x 72.0 mm (2.6 x 2.8 inches)
Valves/Cylinder
FuelingCarburettor. 38 mm
IgnitionDigital magnetic flywheel.
Exhaust
Lubrication2% mixture.
CoolingLiquid
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity9.50 litres (2.51 gallons)
Emissions
Chassis
Frame TypeDeltabox made with rectangular-profile Cr-Mo tubing.
Rake
Trail
Front Suspension45 mm upside-down fork
Front Travel295 mm (11.6 inches)
Rear SuspensionAluminium swing arm. Progressive system with shock absorbers
Rear Travel310 mm (12.2 inches)
Seat
Seat Height945 mm (37.2 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height
Total Length
Total Width
Ground Clearance
Wheelbase1,476 mm (58.1 inches)
Dry Weight101.0 kg (222.7 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre90/90-21
Rear Tire/Tyre140/80-18
Front BrakesSingle disc
Front Brake Diameter260 mm (10.2 inches)
Rear BrakesSingle disc
Rear Brake Diameter220 mm (8.7 inches)
Wheels
Comments
A special version of the EC 250 made for the International Six Day Enduro race.