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Key Specifications
Engine
Single cylinder, two-stroke
Weight
94.8 kg / 209.0 lbs
Fuel Capacity
8.00 litres / 2.11 US gallons
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Full 2021 Yamaha YZ125X Specifications
Colours
Team Yamaha Blue
Warranty
30 Day Limited Factory Warranty
Ground Clearance (in.)
13.8 inches
Ground Clearance (mm)
351 mm
Seat Height
975 mm / 38.4 in.
Wheelbase
1455 mm / 57.3 in.
Height
1285 mm / 50.6 in.
Length
2141 mm / 84.3 in.
Width
825 mm / 32.5 in.
Oil Capacity (l)
0.70 litres
Oil Capacity (Quarts)
0.74 US quarts
Fuel Capacity
8.00 litres / 2.11 US gallons
Wet Weight
94.8 kg / 209.0 lbs
Bore x Stroke (in,)
2.1 x 2.1 inches
Bore x Stroke (mm)
54.0 x 54.5 mm
Displacement (cc)
125.0 cc
Displacement (ci)
7.63 cubic inches
Engine Type
Single cylinder, two-stroke
Engine Detail
Reed-valve-inducted
Fuel System
Carburettor. Mikuni TMX 38
Compression Ratio
8.8:1
Engine Lubrication
Premix
Ignition
CDI
Starter
Kick
Clutch
O-ring chain
Final Drive
Chain (final drive)
Gearbox
6-speed
Frame Type
Semi-double cradle aluminium frame
Suspension - Front
KYB® Speed-Sensitive System inverted fork; fully adjustable
Suspension - Rear
KYB® single shock; fully adjustable
Rake
26.8°
Trail
117 mm / 4.6 in.
Wheel Travel - Front
300 mm / 11.8 in.
Wheel Travel - Rear
315 mm / 12.4 in.
Brakes - Front
Single disc. Hydraulic.
Brakes - Rear
Single disc. Hydraulic.
Rims
Dunlop® AT81 tires
Tyres - Front
90/90-21
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