Compare Dirt Bikes

Pick any two bikes to see specs and photos side by side. Differences are highlighted. Blank = not yet verified for that year-model (we don’t guess).

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125cc 2-stroke

photo coming soon

2025 Yamaha YZ125

Class	125cc 2-stroke
Displacement	125cc
Bore × stroke	54 × 54.5 mm
Cooling	—
Induction	reed-valve inducted
Power valve	—
Starter	—
Transmission	6-speed
Front suspension	KYB Speed-Sensitive System inverted fork; fully adjustable, 11.8-in travel
Front travel	11.8 in
Rear travel	12.4 in
Front brake	270mm
Rear brake	240mm
Front wheel	—
Rear wheel	—
Seat height	38.6 in
Wheelbase	56.9 in
Weight	212 lb (Wet weight*** includes the vehicle with all standard equipment and all fluids, including oil, coolant (as applicable) and a full tank of fuel. It does not include the weight of options or accessories.)
Fuel capacity	1.8 gal
MSRP	—

Highlighted (blue) values differ. Verified manufacturer data; see each bike’s page for sources. Torque/fluid specs are on the individual pages (service-manual only).