These are the known mechanical and performance specifications for your 2019 GAS GAS EC 250.
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. Keihin FCR-MX37- Intake by reed valve
IgnitionElectronic
Exhaust
Lubrication2% oil mixture.
CoolingLiquid
Drivetrain
Gearbox6-speed
Final DriveChain
ClutchMultidisc in oil bath. Magura clutch pump
Driveline
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity9.80 litres (2.59 gallons)
Emissions
Chassis
Frame TypeChrom-Molybdenum perimetral frame
Rake
Trail
Front SuspensionKYB ø48 mm, AOS system, closed cartridge
Front Travel315 mm (12.4 inches)
Rear SuspensionSachs hydraulic mono shock absorber
Rear Travel320 mm (12.6 inches)
Seat
Seat Height960 mm (37.8 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height1,235 mm (48.6 inches)
Total Length2,145 mm (84.4 inches)
Total Width810 mm (31.9 inches)
Ground Clearance
Wheelbase1,480 mm (58.3 inches)
Dry Weight105.0 kg (231.5 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre90/90-21
Rear Tire/Tyre140/80-18
Front BrakesSingle disc. Wave floating disc, 2-piston caliper
Front Brake Diameter260 mm (10.2 inches)
Rear BrakesSingle disc. Wave disc, 1-piston caliper
Rear Brake Diameter220 mm (8.7 inches)
WheelsLight aluminium spoke rim
Comments
From Spain.