2025 Yamaha YZ450F vs 2025 Yamaha YZ450FX
Side-by-side specs. Differences are highlighted. Blank = not yet verified for that year-model (we don’t guess).
Yamaha
Yamaha| Spec | 2025 Yamaha YZ450F | 2025 Yamaha YZ450FX |
|---|---|---|
| Class | 450cc 4-stroke | 450cc 4-stroke |
| Displacement | 450cc | 450cc |
| Bore × stroke | 97 × 60.8 mm | 97 × 60.9 mm |
| Cooling | — | — |
| Induction | Mikuni fuel injection, 44mm | Mikuni fuel injection, 44mm |
| Power valve | — | — |
| Starter | — | — |
| Transmission | 5-speed | 5-speed |
| Front suspension | KYB spring-type fork with speed sensitive damping; fully adjustable, 12.2-in travel | KYB spring-type fork with speed sensitive damping; fully adjustable, 11.8-in travel |
| Front travel | 12.2 in | 11.8 in |
| Rear travel | 12.4 in | 12 in |
| Front brake | 270mm | 270mm |
| Rear brake | 240mm | 240mm |
| Front wheel | — | — |
| Rear wheel | — | — |
| Seat height | 38 in | 37.6 in |
| Wheelbase | 58.3 in | 57.9 in |
| Weight | 240 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.) | 251 lb (Wet weight includes the vehicle with all standard equipment and all fluids, including oil, coolant (as applicable) and a full tank of fuel.) |
| Fuel capacity | 1.6 gal | 2.1 gal |
| 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).