These are the known mechanical and performance specifications for your 2021 Yamaha YZF-R125.
Basic Specs

Engine
Displacement124.7 ccm (7.61 cubic inches)
Type
DetailsSingle cylinder, four-stroke
Max RPM
Compression11.2:1
Bore/Stroke52.0 x 58.6 mm (2.0 x 2.3 inches)
Valves/Cylinder4
FuelingInjection. EFI
IgnitionTCI
Exhaust
LubricationWet sump
CoolingLiquid
Drivetrain
Gearbox6-speed
Final Drive
ClutchAssist and Slipper clutch
DrivelineConstant Mesh
Performance
Horespower15.0 HP (10.9 kW) @ 9000 RPM
Torque11.5 Nm (1.2 kgf-m or 8.5 ft.lbs) @ 8000 RPM
Top Speed
Fuel Economy & Polution
Fuel Consumption2.13 litres/100 km (46.9 km/l or 110.43 mpg)
Fuel Capacity11.50 litres (3.04 US gallons)
Emissions49.4 CO2 g/km. (CO2 - Carbon dioxide emission)
Chassis
Frame TypeCompact deltabox
Rake25.0 deg
Trail89 mm (3.5 inches)
Front SuspensionUpside-down telescopic fork, Ø 41 mm
Front Travel130 mm (5.1 inches)
Rear SuspensionLinked monoshock with spring preload adjustment
Rear Travel114 mm (4.5 inches)
Seat
Seat Height825 mm (32.5 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height1065 mm (41.9 inches)
Total Length1935 mm (76.2 inches)
Total Width680 mm (26.8 inches)
Ground Clearance155 mm (6.1 inches)
Wheelbase1355 mm (53.3 inches)
Dry Weight
Wet Weight144.0 kg (317.5 pounds)
Wheels & Brakes
Front Tire/Tyre100/80-17
Rear Tire/Tyre140/70-17
Front BrakesSingle disc
Front Brake Diameter292 mm (11.5 inches)
Rear BrakesSingle disc
Rear Brake Diameter230 mm (9.1 inches)
Wheels
Comments
Small windscreen.