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).

Yamaha

2026 Yamaha YZ125

Yamaha

2026 Yamaha YZ125X

Class	125cc 2-stroke	125cc 2-stroke
Displacement	125cc	—
Bore × stroke	54 × 54.5 mm	54 × 54.5 mm
Cooling	—	—
Induction	reed-valve inducted	reed-valve inducted
Power valve	—	—
Starter	—	—
Transmission	6-speed	6-speed
Front suspension	KYB Speed-Sensitive System inverted fork; fully adjustable	KYB Speed-Sensitive System inverted fork; fully adjustable, 11.8-in travel
Front travel	11.8 in	11.8 in
Rear travel	12.4 in	12.4 in
Front brake	270mm	270mm
Rear brake	240mm	240mm
Front wheel	21"	—
Rear wheel	19"	—
Seat height	38.6 in	38.2 in
Wheelbase	56.9 in	57.3 in
Weight	212 lb (Wet weight)	212 lb (wet weight)
Fuel capacity	1.8 gal	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).