Featuring a powerful 250cc two‑stroke engine and renowned high performance chassis, the YZ250X was born to win Cross Country races.
| Engine Type | 249cc liquid-cooled 2-stroke; reed-valve inducted |
| Bore x Stroke | 66.4mm × 72.0mm |
| Compression ratio | 7.9~9.4:1 |
| Fuel Delivery | Hitachi Astemo® Keihin PWK38S |
| Transmission | Constant-mesh 5-speed; multiplate wet clutch |
| Final Drive | Chain |
| Suspension / Front | KYB® Speed-Sensitive System inverted fork; fully adjustable, 11.8-in travel |
| Suspension / Rear | KYB® single shock; fully adjustable, 12.4-in travel |
| Brakes / Front | Hydraulic disc, 270mm |
| Brakes / Rear | Hydraulic disc, 240mm |
| Tires / Front | 80/100-21 Dunlop® Geomax MX33F |
| Tires / Rear | 110/100-18 Dunlop® Geomax MX33 |
| L x W x H | 86.0 in x 32.5 in x 50.8 in |
| Seat Height | 38.4 in |
| Wheelbase | 58.5 in |
| Rake (Caster Angle) | 27.7° |
| Trail | 4.8 in |
| Maximum Ground Clearance | 14.2 in |
| Fuel Capacity | 1.8 gal |
| Wet Weight | 229 lb |
| Warranty | 30 Day (Limited Factory Warranty) |
| Team Yamaha Blue |
