2021 Kawasaki KX450 vs 2020 Yamaha YZ450FX
Side-by-side specs. Differences are highlighted. Blank = not yet verified for that year-model (we don’t guess).
| Spec | 2021 Kawasaki KX450 | 2020 Yamaha YZ450FX |
|---|---|---|
| Class | 450cc 4-stroke | 450cc 4-stroke |
| Displacement | — | — |
| Cooling | — | — |
| Induction | Single carburetor (KX450F) | Single carburetor |
| Power valve | — | — |
| Transmission | 6-speed | 5-speed |
| Front travel | 120 in | 120 in |
| Rear travel | 135 in | 150 in |
| Front brake | 280mm | 310mm |
| Rear brake | 245mm | 280mm |
| Front wheel | — | — |
| Rear wheel | — | — |
| Seat height | 34 in | 738 in |
| Weight | 209 lb | 190 lb |
| MSRP | — | — |
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).