2025 Yamaha YZ125 vs 2020 Yamaha YZ125X
Side-by-side specs. Differences are highlighted. Blank = not yet verified for that year-model (we don’t guess).
| Spec | 2025 Yamaha YZ125 | 2020 Yamaha YZ125X |
|---|---|---|
| Class | 125cc 2-stroke | 125cc 2-stroke |
| Displacement | 125cc | — |
| Cooling | — | — |
| Induction | reed-valve inducted | Ported DOHC four-valve per cylinder head with dual overhead cams and twin throttle bodies |
| Power valve | — | — |
| Transmission | 6-speed | 5-speed |
| Front travel | 11.8 in | 200 in |
| Rear travel | 12.4 in | 160 in |
| Front brake | 270mm | 290mm |
| Rear brake | 240mm | 285mm |
| Front wheel | — | — |
| Rear wheel | — | — |
| Seat height | 38.6 in | 29.5 in |
| Weight | 212 lb | 165 lb |
| MSRP | — | $2,999 |
Highlighted (blue) rows differ between the two. Verified manufacturer data; see each bike’s page for sources. Torque/fluid specs are on the individual pages (service-manual only).