Sometimes you can have it all

Just imagine what it would be like to have 450-class engine performance combined with 250-class handling agility. It may seem like an impossible dream. But Yamaha’s engineers set out to make it a reality. So we built a new kind of enduro bike that combines the best of both worlds. Now featuring a new fuel injection system, the high-torque 5-valve 450cc engine pushes out a wave of linear performance that gives this remarkable bike the ability to go fast without feeling you’re on the edge. And with its compact 250-class dimensions, the new short-wheelbase aluminium bilateral beam frame delivers precision steering with remarkable agility.

Liquid-cooled, 4-stroke, single-cylinder, 5-valve, 449cc engine

In the enduro and trail world the WR450F’s liquid-cooled 4-stroke engine has achieved legendary status for its durability and reliability. With its 5-valve cylinder head and new fuel injection system, this powerplant pushes out strong, useable and linear performance hour after hour.

New Fuel Injection system

The WR450F benefits from a compact new fuel injection system which makes for enhanced engine performance. By monitoring sensors which detect throttle position, intake temperature, air pressure, crank rpm and coolant temperature, the ECU is able to constantly adjust fuel volume and ignition timing to achieve optimal engine efficiency.

Yamaha Competition Kit

An optional Competition Kit is available which is aimed at riders who use the WR450F on closed courses. The kit includes a resonator exhaust system, as well as a 13/50 sprocket set and number of other performance parts. There’s also an optional Power Tuner system which allows riders to adjust the engine performance to suit varying conditions.

New all-aluminium bilateral beam frame

Unlike some conventional designs, the WR450F’s new bilateral beam frame is manufactured from a unique combination of forged, extruded and panel aluminium parts which are welded together to create a unit offering an idealised balance of rigidity. This gives excellent rider feedback combined with superior handling performance.

250-class dimensions

The new lightweight chassis has been developed directly from Yamaha’s MXGP-winning YZ250F. Featuring a short 1,475mm wheelbase and compact dimensions, this new 250-class design gives quicker turning and improved agility – and its special bilateral design allows the relocation of the fuel tank and radiators for a greater centralisation of mass.

Advanced chassis specification

With its new fuel injected engine and compact chassis, the WR450F adds an exciting new dimension to the E2 class. Complementing the new bilateral beam frame is a slimline 7.2 litre fuel tank with YZF-type sidepanels, as well as a lower 960mm high seat. And with black Excel wheel rims and Pro-Taper handlebars, the WR450F is ready for action.