These are the known mechanical and performance specifications for your 2017 Kymco Mongoose 90S.
Basic Specs

Engine
Displacement90.00 ccm (5.49 cubic inches)
Type
DetailsSingle cylinder, four-stroke
Max RPM
Compression
Bore/Stroke
Valves/Cylinder
FuelingCarburettor
Ignition
Exhaust
LubricationWet sump
CoolingAir
Performance
Horespower6.30 HP (4.6 kW)
Torque3.20 Nm (0.3 kgf-m or 2.4 ft.lbs)
Top Speed56.3 km/h (35.0 mph)
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity6.00 litres (1.59 gallons)
Emissions
Chassis
Frame TypeTubular Steel Structure
Rake
Trail
Front SuspensionSingle A-arm
Front Travel
Rear SuspensionSwingarm, dual shocks
Rear Travel
Seat
Seat Height
Alt. Seat Height
Total Height940 mm (37.0 inches)
Total Length1,435 mm (56.5 inches)
Total Width905 mm (35.6 inches)
Ground Clearance184 mm (7.3 inches)
Wheelbase
Dry Weight122.0 kg (269.0 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre18/7-8
Rear Tire/Tyre18/9-8
Front BrakesDouble disc
Front Brake Diameter
Rear BrakesSingle disc
Rear Brake Diameter
Wheels
Comments
Made in Taiwan.