Yamaha YZ450F

YZ450-LIGHTER-FATER-QUICKER

Lighter, faster, quicker – the ultimate YZ

Faster and more responsive, the 2014 YZ450F is the absolute peak of all our knowledge, experience and immense passion for off-road. This is the ultimate.

The new YZ450F has been overhauled to bring a razor edge to the strongest elements of the bike. The innovative fuel injected rearward-slanting single cylinder engine has been reworked for more usable power while the snaking exhaust pipe is just one of a raft of fresh features to centralise the weight of the motorcycle.

A brand new chassis further compacts the machine. A redesigned sub-frame, refined gear-shift system, a repositioned fuel tank along with slim and sleek plastics make this motorcycle a tractable weapon.

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To get ahead you need to look ahead

YZ450F

The characteristics any racer wants from a motorcycle are usually the same: faster, lighter and easier. With this Ultimate YZ range Yamaha are forward thinkers. We want to be at the front, just like you, just like them.Yamaha have watched and reacted wherever a knobbly tyre has met off-road terrain in anger and now we have refined our YZ technology to the point where you simply cannot get a better, more usable, more competitive package.Competition lines the soul at Yamaha and the new YZ motocrossers are our latest offering designed to create a thrill and a buzz and then to savour it in the best way possible. Faster, lighter, easier.

Revised 450cc engine

Revised 450cc engine

The fuel injected, 4-stroke, 4-valve, DOHC, rearward-slanting single cylinder engine now boasts more controllable power. Formidable ECU performance combined with new gear ratios mean plenty of easy-to-use torque with a strong push from third gear up. A reworked gearshift-system reduces drive-force loss and ensures smoother shift operations.

Brand new bilateral beam aluminium frame

Brand new bilateral beam aluminium frame

Increased feedback thanks to a chassis direct from the YZ250F. The new irregular exhaust silencer permits a shorter subframe achieving a more central riding sensation. Suspension improvements with new coil springs coupled with larger 22mm front axle augment the YZ450F’s ability to grip the dirt.

Saving and shaving weight

Saving and shaving weight

The combination of the new frame and design overhaul of other elements on the YZ450F has led to weight reduction and light-weight feel. The use of a wet sump lubrication system removes the need for an oil tank while a rejigged radiator form and shortened subframe are other examples of how the YZ450F has been trimmed and honed.

Centralisation at core

Centralisation at core

The 2014 YZ450F conveys the best sensation yet of mass centralisation and therefore superior usability. Immediately noticeable is the repositioning of the 7.5l fuel tank further inside the motorcycle. The new unit still enables easy access to the air filter for better serviceability. This is YZ450F performance and power in a YZ250F housing.

New looks for new age

New looks for new age

Minimal, economic and sharp lines adhere to a ‘smash movement’ design concept. The look shouts ‘race me’ and is helped by new side panel plastics, air scoop and rear mudguard. Also for the first time ever on a Yamaha motorcycle ‘in-mould’ graphics technology has been applied to the bodywork for a translucent look and a more resistant surface.

techspecs

YZ450F
Engine
Engine type liquid-cooled, 4-stroke, DOHC, 4-valves, rear ward slanting single cylinder
Displacement 449.7cc
Bore x stroke 97.0 mm x 60.8 mm
Compression ratio 12.5 : 1
Lubrication system Wet sump
Fuel system Fuel Injection
Clutch type Wet, Multiple Disc
Ignition system TCI
Starter system Kick
Transmission system Constant Mesh, 5-speed
Final transmission Chain
Chassis
Frame Semi double cradle
Front suspension system Upside-down telescopic fork
Front travel 310 mm
Caster angle 27º 25
Trail 122 mm
Rear suspension system Swingarm, (link suspension)
Rear travel 310 mm
Front brake Hydraulic single disc, Ø 250 mm
Rear brake Hydraulic single disc, Ø 245 mm
Front tyre 80/100-21 MS32
Rear tyre 110/90-19 MS32
Dimensions
Overall length 2,180 mm
Overall width 825 mm
Overall height 1,280 mm
Seat height 965 mm
Wheel base 1,480 mm
Minimum ground clearance 335 mm
Wet weight (including full oil and fuel tank) 111 kg
Fuel tank capacity 7.5 litres
Oil tank capacity 0.9 litres

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