These are the known mechanical and performance specifications for your 2006 GAS GAS EC 250.
Basic Specs

Engine
Displacement249.30 ccm (15.21 cubic inches)
Type
DetailsSingle cylinder, four-stroke
Max RPM
Compression
Bore/Stroke66.4 x 72.0 mm (2.6 x 2.8 inches)
Valves/Cylinder
FuelingCarburettor. Keihin PWK
IgnitionDigital magnetic flywheel Kokusan.
Exhaust
Lubrication
Cooling
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 SuspensionUpside-down Marzocchi fork
Front Travel295 mm (11.6 inches)
Rear SuspensionAluminium swing arm. Progressive system with Öhlins* shock absorber
Rear Travel310 mm (12.2 inches)
Seat
Seat Height940 mm (37.0 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height
Total Length
Total Width
Ground Clearance
Wheelbase1,476 mm (58.1 inches)
Dry Weight102.0 kg (224.9 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre90/90-21
Rear Tire/Tyre140/80-18
Front BrakesDouble disc
Front Brake Diameter260 mm (10.2 inches)
Rear BrakesSingle disc
Rear Brake Diameter220 mm (8.7 inches)
Wheels
Comments