YFZ450R / SE 2018 ATV

Taking ATV racing to the next level.

Serious racers will tell you that the Yamaha YFZ450R is the clear favourite with winning riders. Its sharp-handling chassis and ultra-responsive 450cc engine have made it today's number one racing ATV. Nothing else comes close

A race-bred assist and slipper clutch gives more precise control over corner entry speed for quicker lap times - while the race-bred engine delivers superfast throttle response and hard-hitting high rpm power for holeshot-winning performance.

Sharp-designed bodywork gives the rider space to shift the bodyweight during cornering or hard acceleration. And the lightweight piggyback shocks make for razor-sharp handling!

Available in:

2018 Yamaha YFZ450R EU Racing Blue Studio 0012018 Yamaha YFZ450R EU White Studio 001


  • Light action throttle lever
  • First ATV in its class with a slipper clutch
  • Lightweight piggyback shocks for precise handling
  • High compression engine for explosive performance
  • Shock calibration matches tyre character perfectly
  • Cam design for strong high rpm power feeling
  • 32-bit fuel injection for instant response
  • Lightweight weldless hybrid aluminium frame
  • Cast aluminium swingarm with piggyback rear shock
  • Dual front discs with wave-type rear
  • Quick-release fasteners for easy bodywork removal
  • Roomy bodywork and padded seat shape for comfort

ATVs with engines up to 70cc are recommended for use only by riders 6 years and older and always with adult supervision. ATVs with engines of 70 to 90cc are recommended only for use by riders 10 years and older, and always under adult supervision. ATVs with engines of 90cc or greater are recommended for use only by riders 16 years and older.

ATVs are built to operate within their design limits. Safe towable weights, together with maximum carrying capacity are identified in the owner's manual if applicable. For durability, reliability, but most important of all, operator safety, under no circumstances should the recommended capacities be exceeded. Yamaha recommends that all ATV riders take an approved training course.

For safety and training information, see your dealer or call your Yamaha Distributor in your country. ATVs can be hazardous to operate.

Engine type

Single cylinder, liquid-cooled, 4-stroke, DOHC, 5-valves



Bore x stroke

95.0 mm x 63.4 mm

Compression ratio

11.8 : 1

Lubrication system

Dry sump

Fuel system

Fuel Injection 42 mm EHS with ISC

Ignition system


Starter system


Transmission system

5-speed, manual slipper clutch

Drive system


Final transmission

Sealed O-ring chain, eccentric adjustment


Front suspension system

Independent double wishbone, threaded preload adjustable dual-rate coil-over springs, 3-way adjustable damper, 250 mm stroke

Rear suspension system

Cast aluminium swingarm, threaded preload adjustable coil-over springs, 3-way adjustable damper, 280 mm stroke

Front brake

Dual ventilated disc with hydraulic twin piston callipers

Rear brake

Wave-type ventilated disc with twin piston callipers

Front tyres


Rear tyres



Overall length

1,795 mm

Overall width

1,240 mm

Overall height

1,065 mm

Seat height

810 mm


1,270 mm

Minimum ground clearance

115 mm

Wet weight (including full oil and fuel tank)

184 kg

Fuel tank capacity

10.0 litres