These are the known mechanical and performance specifications for your 2013 Rieju Marathon 125 Pro Competizione.
Basic Specs

Engine
Displacement125.00 ccm (7.63 cubic inches)
TypeYamaha engine
DetailsSingle cylinder, four-stroke
Max RPM
Compression
Bore/Stroke52.0 x 58.6 mm (2.0 x 2.3 inches)
Valves/Cylinder4
FuelingCarburettor. Keihin CVEK 30
IgnitionRace spec CDI with selectable power mapping
ExhaustLeovinci
LubricationWet sump
CoolingLiquid
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity6.30 litres (1.66 gallons)
Emissions
Chassis
Frame TypeDouble cradle. Highly resistant steel perimeter
Rake
Trail
Front SuspensionMarzocchi inverted fork of Ø40mm, adjustable.
Front Travel
Rear SuspensionGas Mono-shock shock absorber and seaprate bottle PRS system, adjustable.
Rear Travel
Seat
Seat Height870 mm (34.3 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height1,165 mm (45.9 inches)
Total Length2,150 mm (84.6 inches)
Total Width
Ground Clearance
Wheelbase1,405 mm (55.3 inches)
Dry Weight115.0 kg (253.5 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre90/90-21
Rear Tire/Tyre120/80-18
Front BrakesSingle disc. Galfer Wave. Double piston caliper.
Front Brake Diameter300 mm (11.8 inches)
Rear BrakesSingle disc. Galfer Wave
Rear Brake Diameter200 mm (7.9 inches)
WheelsCompetition FIM3


Comments
Tommaselli tapered handlebars. Spanish brand.