| Attribute | Yamaha YZ250FX 2019 × | Yamaha YZ250FX 2018 × |
|---|---|---|
| General | ||
| Production from (year) | 2019 | 2018 |
| Make | Yamaha | Yamaha |
| Model | Yamaha YZ250FX | Yamaha YZ250FX |
| Category | Enduro / offroad | Enduro / offroad |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, four-stroke |
| Valves per cylinder | 4 | 4 |
| Fuel system | Injection. Keihin® 44mm | Injection. Keihin® 44mm |
| Engine details | Titanium valves | Titanium valves |
| Displacement (cm³) | 250 | 250 |
| Cooling system | Liquid | Liquid |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 77 | 77 |
| Stroke (mm) | 53.6 | 53.6 |
| Gearbox | 6-speed | 6-speed |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) | Double Overhead Cams/Twin Cam (DOHC) |
| Driveline | O-ring chain | O-ring chain |
| Clutch | Multiplate wet clutch | Multiplate wet clutch |
| Compression | 13.5:1 | 13.5:1 |
| Chassis | ||
| Front suspension | KYB® spring-type fork with speed sensitive damping; fully adjustable | KYB® spring-type fork with speed sensitive damping; fully adjustable |
| Rear suspension | KYB® single shock; full adjustable | KYB® single shock; full adjustable |
| Front brakes | Single disc. Hydraulic. | Single disc. Hydraulic. |
| Rear brakes | Single disc. Hydraulic. | Single disc. Hydraulic. |
| Diameter (mm) | 245 | 245 |
| Frame type | Bilateral beam frame | Bilateral beam frame |
| Front tyre | 90/90-21 | 90/90-21 |
| Rear tyre | 110/100-18 | 110/100-18 |
| Wheels | Dunlop® AT81F tyres | Dunlop® AT81F tyres |
| Front wheel travel (mm) | 310 | 310 |
| Rear wheel travel (mm) | 318 | 318 |
| Trail (mm) | 114 | 114 |
| Rake (fork angle) (degree) | 26.3 | 26.3 |
| Other | ||
| Starter | Electric | Electric |
| Color options |
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| Dimensions | ||
| Wheelbase (mm) | 1,466 | 1,466 |
| Kerb weight (kg) | 112.9 | 112.9 |
| Overall height (mm) | 1,280 | 1,280 |
| Overall length (mm) | 2,164 | 2,164 |
| Overall width (mm) | 826 | 826 |
| Seat height (mm) | 965 | 965 |
| Ground clearance (mm) | 325 | 325 |
| Performance | ||
| Fuel capacity (l) | 7.57 | 7.57 |
| Oil capacity (l) | 1.5 | 1.5 |