The YZ450FX runs all the latest frame, suspension, engine and electronics upgrades found on the YZ450F – including the Yamaha’s exclusive smartphone tuning. We’ve developed the FX specifically for off-road competition. So as well as enduro engine and suspension settings, the FX has an 18 in rear wheel, bashplate, sealed O-ring chain, fuel level warning indicator and an aluminium sidestand. The Australian model comes with off road kit fitted as standard that makes it eligible for recreational registration in applicable states.
YZ450FX – when you want to push in the bush.
POTENT FUEL-INJECTED ENGINE
A high-compression cylinder head, forged piston, aggressive cam profiles, cylinder geometry and much more work together to give YZ450FX riders the ideal power spread in challenging off-road racing conditions.
ADJUSTABLE ENGINE MAPPING
A handlebar-mounted map switch allows the rider to quickly select between preloaded engine maps—loaded and configured in the Power Tuner app—to account for changing track and weather conditions.
BILATERAL BEAM FRAME
Yamaha's bilateral beam aluminum frame features main spars, FX-specific engine mounts and an engine mounting position that centralises mass and provides an ideal balance between cornering feel and straight-line confidence.
COMPACT BODY AND SEAT DESIGN
The YZ450FX features stylish bodywork from tip to tail, including a large 8.2 litre, mass-centralised fuel tank, the body design is narrow for more comfortable knee grip and control feeling, while the narrower and lower seat gives the rider additional room to move aboard the machine.
YAMAHA POWER TUNER APP
Yamaha's exclusive Power Tuner app puts the flexibility and precision tunability of the GYTR® Power Tuner into your smartphone. Make fueling and ignition timing changes instantly and upload them to the bike via the onboard WiFi system for the ultimate in track-side tuning.
CROSS COUNTY FEATURES
With the electric starting system, a 8.2L fuel tank, rugged plastic skid plate, 18-inch rear wheel and XC racing tyres, the YZ450FX is ready to win right out of the box.
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.
TOUGHER WIDE RATIO 5-SPEED TRANSMISSION
The WR450F's robust 5-speed transmission is built to handle even the most aggressive left foot. The specially-developed gears feature a large surface area that spread the load, and third and fourth have received a surface treatment to increase durability. In addition, the shift drum and selectors now give improved feel and a shorter stroke when shifting gear. Ratios are ideal for enduro riding with lower gearing from first to third gear and taller-geared fifth compared to YZ450F.
MASS-CENTRALISED WRAPAROUND EXHAUST
A key feature of the WR450F is its mass centralised design, in which major components are located as close to the bike's centre of gravity as possible. One example of this is the wraparound exhaust that snakes around the cylinder - this design also enables the fitment of a muffler that is mounted close to the bike's centre. The WR450F runs a YZ450F exhaust with WRF specific muffler to achieve the goal of increased power with control. Combined with the rearward-slanted cylinder, the exhaust centralises mass and contributes significantly towards lightweight and dynamic handling performance.
Liquid-cooled, 4-stroke, DOHC, 4-valve
Bore x Stroke (mm)
97.0 x 60.9
12.8 : 1
Fuel Tank Capacity (L)
Constant mesh 5-speed
Telescopic forks, 310mm travel
Swingarm (link suspension), 317mm travel
Hydraulic single disc, 270mm
Hydraulic single disc, 245mm
Seat Height (mm)
Ground Clearance (mm)
Wet Weight (kg)