These are the known mechanical and performance specifications for your 2008 Gilera Runner SP 50.
Basic Specs

Engine
Displacement49.30 ccm (3.01 cubic inches)
Type
DetailsSingle cylinder, two-stroke
Max RPM
Compression
Bore/Stroke40.0 x 39.3 mm (1.6 x 1.5 inches)
Valves/Cylinder
FuelingInjection
IgnitionElectronic CDI
Exhaust
LubricationSeparate with automatic mixer
CoolingLiquid
Fuel Economy & Polution
Fuel Consumption1.60 litres/100 km (62.5 km/l or 147.01 mpg)
Fuel Capacity12.00 litres (3.17 gallons)
Emissions37.1 CO2 g/km. (CO2 - Carbon dioxide emission)
Chassis
Frame TypeCradled in welded steel tubes with pressed steel reinforcements
Rake
Trail
Front Suspension Fork with upside down shafts with double effect hydraulic damper
Front Travel
Rear SuspensionHydraulic single damper, co-axial helicoidal spring
Rear Travel
Seat
Seat Height815 mm (32.1 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height
Total Length1,830 mm (72.0 inches)
Total Width715 mm (28.1 inches)
Ground Clearance
Wheelbase1,290 mm (50.8 inches)
Dry Weight89.0 kg (196.2 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre120/70-12
Rear Tire/Tyre120/70-12
Front BrakesSingle disc. Hydraulic with Ø 220 mm stainless steel disc
Front Brake Diameter220 mm (8.7 inches)
Rear BrakesSingle disc. Hydraulic with Ø 175 mm stainless steel disc
Rear Brake Diameter175 mm (6.9 inches)
Wheels
Comments
The catalyzed version respects the European Multidirective 97/24 EC chapter 5 (Euro1)