| MODEL | YAMAHA WR 450F 2027 |
| Year | 2027 |
| Engine Type | Four stroke, single cylinder, DOHC, 4 titanium valves |
| Displacement / Capacity | 449 cc / 27.4 cu in |
| Bore X Stroke | 97.0 x 60.8 mm |
| Compression Ratio | 13.0:1 |
| Cooling System | Liquid cooled |
| Max Power | — |
| Max Torque | — |
| Ignition | TCI |
| Induction | 44 mm fuel injection |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | Dry sump |
| Gear Box | 5-speed, wide-ratio, constant mesh |
| Clutch | Wet, multi-disc |
| Final Drive | O-ring chain |
| CHASSIS SPECS | |
| Frame | Control Fill aluminium bilateral beam |
| Front Suspension | 48 mm KYB spring fork, speed-sensitive damping, fully adjustable, 300 mm / 11.8 in travel |
| Rear Suspension | Swingarm, link type, KYB mono shock, fully adjustable, 306 mm / 12.0 in travel |
| Front Brakes | Single 270 mm hydraulic disc, 4-piston caliper |
| Rear Brakes | Single 240 mm disc, 2-piston caliper |
| DIMENSION SPECS | |
| Overall Length | 2170 mm / 85.4 in |
| Overall Width | 825 mm / 32.5 in |
| Overall Height | 1265 mm / 49.8 in |
| Seat Height | 955 mm / 37.6 in |
| Wheelbase | 1470 mm / 57.9 in |
| Ground Clearance | 330 mm / 13.0 in |
| Dry Weight | — |
| Wet Weight | 116 kg / 256 lbs |
| WHEEL SPECS | |
| Front Tyre | 90/90-21 |
| Rear Tyre | 140/80-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 7.4 Litres / 2.0 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The 2027 WR450F is an update of the 2024 redesign with a retuned engine favouring low and mid-range power, a new frame and suspension and a hydraulic clutch. The rear sprocket goes from 50 to 51 teeth, rear brake parts are lighter, and it gets Dunlop Geomax AT82 tyres plus Power Tuner traction control with an ECU lock.
