These are the known mechanical and performance specifications for your 2004 Yamaha YZ 125.
Basic Specs
Engine
Displacement124.00 ccm (7.57 cubic inches)
Type
DetailsSingle cylinder, two-stroke
Max RPM
Compression8.7:1
Bore/Stroke54.0 x 54.5 mm (2.1 x 2.1 inches)
Valves/Cylinder
Fueling
Ignition
Exhaust
Lubrication
CoolingLiquid
Chassis
Frame TypeFron
Rake
Trail
Front SuspensionTelescopic fork
Front Travel300 mm (11.8 inches)
Rear SuspensionSwinging arm (Monocross)
Rear Travel315 mm (12.4 inches)
Seat
Seat Height992 mm (39.1 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height1,311 mm (51.6 inches)
Total Length2,130 mm (83.9 inches)
Total Width827 mm (32.6 inches)
Ground Clearance398 mm (15.7 inches)
Wheelbase1,438 mm (56.6 inches)
Dry Weight87.0 kg (191.8 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre80/90-21
Rear Tire/Tyre100/90-19
Front BrakesSingle disc
Front Brake Diameter250 mm (9.8 inches)
Rear BrakesSingle disc
Rear Brake Diameter245 mm (9.6 inches)
Wheels
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