These are the known mechanical and performance specifications for your 2002 Yamaha TT-R 125 LW.
Basic Specs

Engine
Displacement123.70 ccm (7.55 cubic inches)
Type
DetailsSingle cylinder, four-stroke
Max RPM
Compression10.0:1
Bore/Stroke54.0 x 54.0 mm (2.1 x 2.1 inches)
Valves/Cylinder
Fueling
Ignition
Exhaust
Lubrication
CoolingAir
Performance
Horespower9.80 HP (7.2 kW)
Torque9.85 Nm (1.0 kgf-m or 7.3 ft.lbs)
Top Speed
Chassis
Frame Type
Rake
Trail
Front Suspension
Front Travel180 mm (7.1 inches)
Rear Suspension
Rear Travel168 mm (6.6 inches)
Seat
Seat Height805 mm (31.7 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height1,085 mm (42.7 inches)
Total Length1,885 mm (74.2 inches)
Total Width795 mm (31.3 inches)
Ground Clearance295 mm (11.6 inches)
Wheelbase1,270 mm (50.0 inches)
Dry Weight78.0 kg (172.0 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre70/100-19
Rear Tire/Tyre90/100-15
Front BrakesExpanding brake
Front Brake Diameter220 mm (8.7 inches)
Rear BrakesExpanding brake
Rear Brake Diameter110 mm (4.3 inches)
Wheels
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