| MODEL | YAMAHA WR 250F 2018 - 2019 |
| Year | 2018 - 2019 |
| Engine Type | Four stroke, single cylinder, DOHC, 4 valve, titanium valves |
| Displacement / Capacity | 249 cc / 15.2 cu in |
| Bore X Stroke | 77 x 53.6 mm |
| Compression Ratio | 13.8:1 |
| Cooling System | Liquid cooled |
| Max Power | — |
| Max Torque | — |
| Ignition | TCI: Transistor Controlled Ignition |
| Induction | 44 mm Keihin throttle body fuel injection |
| Start System | Electric / Kick |
| TRANSMISSION SPECS | |
| Lubrication | Wet sump |
| Gear Box | 6 speed, wide ratio |
| Clutch | Wet, multiple disc |
| Final Drive | #520 chain |
| CHASSIS SPECS | |
| Frame | Aluminium bilateral beam |
| Front Suspension | 48 mm inverted fork, adjustable; 310 mm / 12.2 in travel |
| Rear Suspension | KYB fully adjustable single shock; 315 mm / 12.4 in travel |
| Front Brakes | Single 270 mm floating wave disc, 2 piston caliper |
| Rear Brakes | Single 245 mm disc, 1 piston caliper |
| DIMENSION SPECS | |
| Overall Length | 2165 mm / 85.2 in |
| Overall Width | 825 mm / 32.5 in |
| Overall Height | 1280 mm / 50.4 in |
| Seat Height | 965 mm / 38.0 in |
| Wheelbase | 1465 mm / 57.7 in |
| Ground Clearance | 325 mm / 12.8 in |
| Dry Weight | — |
| Wet Weight | 117 kg / 258 lb |
| WHEEL SPECS | |
| Front Tyre | 80/100-21 |
| Rear Tyre | 100/100-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 7.5 Litres / 2.0 US gal |
| Fuel Consumption | — |
| Top Speed | — |
For 2018 the WR250F received a reworked engine with a reshaped cylinder head and intake funnel, new cams and valve springs, a lighter piston and revised ECU mapping. It also adopted the YZ250F bilateral beam frame, slightly wider than before, with revised suspension settings. The bike keeps its enduro-specific extras over the motocrosser: six-speed gearbox, electric start and a radiator fan.
