These are the known mechanical and performance specifications for your 2021 QJmotor QJ125T-2C.
Basic Specs

Engine
Displacement125.0 ccm (7.63 cubic inches)
Type
DetailsSingle cylinder, four-stroke
Max RPM
Compression9.0:1
Bore/Stroke53.7 x 55.0 mm (2.1 x 2.2 inches)
Valves/Cylinder
FuelingInjection
IgnitionTCI
Exhaust
LubricationForced/Splash
CoolingAir
Performance
Horespower8.3 HP (6.1 kW) @ 7500 RPM
Torque9.2 Nm (0.9 kgf-m or 6.8 ft.lbs) @ 6000 RPM
Top Speed
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity4.80 litres (1.27 US gallons)
Emissions
Chassis
Frame TypeUnderbone, steel
Rake
Trail
Front SuspensionTelescopic
Front Travel90 mm (3.5 inches)
Rear SuspensionUnit Swing
Rear Travel72 mm (2.8 inches)
Seat
Seat Height750 mm (29.5 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height1102 mm (43.4 inches)
Total Length1840 mm (72.4 inches)
Total Width696 mm (27.4 inches)
Ground Clearance135 mm (5.3 inches)
Wheelbase1276 mm (50.2 inches)
Dry Weight
Wet Weight107.0 kg (235.9 pounds)
Wheels & Brakes
Front Tire/Tyre100/90-12
Rear Tire/Tyre110/90-12
Front BrakesSingle disc. Hydraulic.
Front Brake Diameter190 mm (7.5 inches)
Rear BrakesSingle disc. Hydraulic.
Rear Brake Diameter130 mm (5.1 inches)
Wheels
Comments
The Chinese firm QJMotor is owned by Qianjiang that has bought Benelli, Keeway, and KSR.