WR450F
Yamaha WR450F for Sale at Caboolture Yamaha in Caboolture, QLD | Specifications and Review Information
Using the YZ450F as a starting point, our experienced development team - including Kiwi race team manager and Yamaha legend Josh Coppins - came up with an enduro weapon that turns, stops and goes better than ever before. The 2021 WR450F produces bulk power but transmits that power to the ground in a more controllable manner with additional traction at both wheels.
Sporting a new aluminium bilateral beam frame, the WR450F feels lighter, is easier to turn in tight situations and has improved stability both in the bumps and in the air. Progressive, smooth KYB suspension continues to absorb big impacts and the braking performance is now improved.
2021 WR450F is designed to appeal to those born to ride - from professional enduro riders to super capable trail riders.
NEW LIGHTER CYLINDER HEAD
The new cylinder head weighs 310g less than before and is significantly more compact. Because this innovative design is positioned close to the bike's mid-section it helps to achieve an idealised mass centralisation, and this contributes enormously towards the WR450F's dynamic handling characteristics. The intake/exhaust valve angles and intake port design are changed and a new piston with a small recess is specified to create a more concave combustion chamber for increased power. This new high-efficiency head with its long and straight inlet, produces a fine balance of power with exceptional controllability.
HIGH EFFICIENCY ANGLED RADIATORS
To ensure that the new more powerful engine runs efficiently in all conditions, Yamaha's engineers have developed radiators that are angled to directly face the incoming air. By maintaining a consistent airflow, this angled radiator layout delivers effective engine cooling for winning performance. A thermo fan cuts in to keep the fluid cool when the going gets tough.
SMARTPHONE TUNING
In 2019 the WR450F became the first enduro bike with inbuilt connectivity featuring remote wireless tuning using a smartphone. Now the 2021 model continues to lead the field in digital technology. By downloading the free Power Tuner app for IOS or Android devices, WR450F riders can easily adjust the fuel/air mix and ignition timing to set the bike up for different riding conditions. This feature makes the 2021 WR450F the most adaptable enduro machine – and one that can be tuned instantly on the trail, allowing riders to make the most of a wide range of surfaces and weather conditions. In addition to its engine re-mapping function, the Power Tuner app can also record information and monitor a range of data, including system diagnosis, engine run time and more, making it an indispensable part of every rider's toolkit.
MORE POWERFUL AND COMPACT NEW 450CC ENGINE
Already renowned for its enormous power output, the WR450F engine has been thoroughly redesigned for 2021 to deliver stronger and more controllable performance. The new engine is essentially the new generation YZ450F tuned with enduro settings - which means its significantly more compact and lighter than the 2020 engine. The revised configuration enhances the bike's mass centralised design to make it one of the easiest-handling large capacity enduro machines. Featuring increased compression ratio - up from 12.8:1 to 13:1 - the reverse cylinder head also runs a durable forged piston and aggressive cam profiles. New intake/exhaust systems and ECU run WRF specific settings to deliver the best balance of race-winning performance together with ultimate controllability for tight trails.
HANDLEBAR-MOUNTED MAP SWITCH
The 2021 WR450F features a handlebar-mounted mapping switch (blue button) that enables the rider to select one of two power maps on the fly. This simple adjustment allows instant engine delivery changes to suit variable terrain or weather conditions. For example, from an aggressive map for fast dry conditions to a high traction map for slippery hillclimbs.
Technical Specifications
Engine
| Engine Type | Liquid-cooled, 4-stroke, DOHC, 4-valve |
|---|---|
| Displacement (cc) | 450.0 |
| Bore x Stroke (mm) | 97.0 x 60.8 |
| Compression Ratio | 13.0:1 |
| Lubrication System | Wet sump |
| Fuel Management | Fuel Injection |
| Ignition | TCI |
| Starter System | Electric |
| Fuel Tank Capacity (L) | 7.9 |
| Final Transmission | Chain |
| Transmission | Constant mesh 5-speed |
Chassis
| 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 Metzeler Six Days Extreme |
| Tyres Rear | 130/90-18 Metzeler Six Days Extreme |
Dimensions
| Length (mm) | 2175 |
|---|---|
| Width (mm) | 825 |
| Height (mm) | 1270 |
| Seat Height (mm) | 955 |
| Wheelbase (mm) | 1480 |
| Ground Clearance (mm) | 320 |
| Wet Weight (kg) | 119 |
