yamaha YZ450F


Connected as One

This is the most complete motocross package we’ve ever created. And it’s also the first production bike that allows you to connect wirelessly and dial in your own customised engine settings - and maximise your winning potential.

The new lightweight electric start saves vital seconds when you’re under pressure – and the reverse-head engine gets a new high compression top end and optimised ECU for even stronger race winning power.

With its new lightweight frame and refined suspension, this YZ450F gives you improved stability and agility over whoops and through corners. And its slim and compact new bodywork delivers total rider agility combined with factory bike looks.


  • New high performance reverse-head engine
  • Power Tuner smartphone app
  • All new high-compression cylinder head
  • Lightweight electric starter with lithium-ion battery
  • Slimmer and more compact body design
  • Newly designed high-rigidity bilateral beam frame
  • Optimised suspension matching new frame
  • Easy air filter replacement system
  • New radiator design for better cooling
  • Compact 6.2-litre fuel tank
  • Slimmer and flatter seat 

Engine Type

4-stroke, liquid-cooled, DOHC, 4-valves, rear ward slanting single cylinder

Displacement CC


Bore X Stroke

97.0 mm x 60.8 mm

Compression Ratio

12.8 : 1

Oil Capacity

0.95 L

Fuel Tank Capacity

6.2 L



Transmission Type

Constant Mesh, 5-speed

Dimensions LxWxH

2185 mm x 825 mm x 1285 mm


1485 mm

Seat Height

965 mm

Ground Clearance

335 mm

Kerb Weight

112 kg

Tyre Size Front

80/100-21 51M

Tyre Size Rear

110/90-19 62M

Brakes Type Front

Hydraulic single disc, 270 mm

Brakes Type Rear

Hydraulic single disc, 245 mm