Based on the MXGP World Championship winning YZ450F, the WR450F employs Yamaha’s innovative reverse cylinder head and rearwards slanting cylinder. Having convincingly demonstrated its winning performance at the highest level, this industry-leading engine design offers high levels of controllable and linear torque, while this design’s greater mass centralisation contributes towards the bike’s agile handling character.
Together with the compact and light-handling YZ-F based chassis, the WR450F delivers major improvements in terms of weight, power characteristic, agility and rideability.
Optional Power Tuner
The GYTR Power Tuner accessory offers riders a huge benefit by allowing customised fuel injection settings to fit their personal preferences.
The WR450F is equipped with a full lighting kit, and to handle the extra demand on the electrical system, a high output ACM is fitted. The lightweight digital instruments include a multi-function display with an enduro computer that keeps the rider informed about their progress and distance covered - while a fuel level warning lets the rider know when it's time to refuel. The competition kit now includes a new Polisport headlight and lightweight Barkbusters.
Starting the WR450F on a cold day - or restarting a hot engine - is made easy with the newly designed electric starter. A new auto-decompressor system cuts in when the electric start is activated for easy starting, and the air supply to the engine can be increased by 40% for reliable cold starting.
Aluminium bilateral beam frame
Developed from the design used on the YZ450F, the aluminium bilateral beam frame runs with sophisticated front and rear suspension systems that deliver light and agile handling performance. The highly versatile and easy to ride character of the new chassis complements the strong and controllable linear torque feeling of the new engine, enabling the WR450F rider to exploit the bike's full potential.
Aggressive YZ450F inspired engine
The WR450F engine features a reverse cylinder head with a front facing air intake and rear-exiting exhaust. By increasing intake and exhaust efficiency, this innovative layout enhances the engine's linear torque feeling, and delivers deep reserves of highly controllable and easy-to-use power.
KYB forks with enduro settings
The WR450F uses the same forks as its motocross counterpart, but to ensure smoother low speed operation - combined with the ability to absorb harsh bumps - the WR-F model runs with dedicated enduro settings. Similarly, the YZ450F-based rear shock runs with revised settings that have been designed to handle the wide variety of low and high speed riding associated with enduro racing.
|Engine Type||Liquid-cooled, 4-stroke, DOHC, 4-valve|
|Bore x Stroke (mm)||97.0 x 60.8|
|Compression Ratio||12.5 : 1|
|Lubrication System||Wet sump|
|Fuel Management||Fuel Injection|
|Starter System||Electric and Kick|
|Fuel Tank Capacity (L)||7.5|
|Transmission||Constant mesh 5-speed|
|Frame Type||Bilateral beam|
|Suspension Front||Telescopic forks, 310mm travel|
|Suspension Rear||Swingarm (link suspension), 318mm travel|
|Brakes Front||Hydraulic single disc, 270mm|
|Brakes Rear||Hydraulic single disc, 245mm|
|Tyres Front||90/90/21 54M M+S Tube type|
|Tyres Rear||130/90-18 69M+S Tube type|
|Seat Height (mm)||965|
|Ground Clearance (mm)||325|
|Wet Weight (kg)||123|