These are the known mechanical and performance specifications for your 2021 Vespa GTS 300 Touring.
Basic Specs

Engine
Displacement278.0 ccm (16.96 cubic inches)
Type
DetailsSingle cylinder, four-stroke
Max RPM
Compression
Bore/Stroke75.0 x 63.0 mm (3.0 x 2.5 inches)
Valves/Cylinder4
FuelingInjection
IgnitionCDI
Exhaust
LubricationWet sump, chain-driven lobe pump
CoolingLiquid
Drivetrain
GearboxAutomatic
Final Drive
ClutchAutomatic dry centrifugal clutch with vibration dampers
Driveline
Performance
Horespower23.8 HP (17.4 kW) @ 7750 RPM
Torque25.0 Nm (2.5 kgf-m or 18.4 ft.lbs) @ 5250 RPM
Top Speed
Fuel Economy & Polution
Fuel Consumption3.21 litres/100 km (31.2 km/l or 73.28 mpg)
Fuel Capacity8.50 litres (2.25 US gallons)
Emissions74.5 CO2 g/km. (CO2 - Carbon dioxide emission)
Chassis
Frame TypeSheet steel shell with welded structural reinforcements
Rake
Trail
Front SuspensionSingle arm with helical spring and hydraulic shock absorber
Front Travel
Rear SuspensionDouble hydraulic shock absorber with helical spring with preload adjustable in 4 positions
Rear Travel
Seat
Seat Height790 mm (31.1 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height1375 mm (54.1 inches)
Total Length1950 mm (76.8 inches)
Total Width755 mm (29.7 inches)
Ground Clearance
Wheelbase1370 mm (53.9 inches)
Dry Weight158.0 kg (348.3 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre120/70-12
Rear Tire/Tyre130/70-12
Front BrakesSingle disc. ABS. Hydraulic.
Front Brake Diameter220 mm (8.7 inches)
Rear BrakesSingle disc. ABS. Hydraulic.
Rear Brake Diameter220 mm (8.7 inches)
WheelsAlloy rims
Comments
Traction control. USB socket.