The Bike

Yamaha WR450F

Heavily based on the production WR450F platform, the Outsiders Yamaha Official Enduro Team’s WR450F racing machine features Yamaha’s innovative reverse cylinder head engine and light-handling, aluminium bilateral chassis. With Loïc Larrieu topping the 2017 International Six Days Enduro and wrapping up the season as the EnduroGP World Championship runner-up, the team took advantage of the feedback collected to further develop and ready their WR450F for Enduro 2 class competition in 2018.

Outsiders Yamaha Official Enduro Team’s machine features a series of modifications that bring a further reduction of five kilograms compared to the standard WR450F. To ensure that engine power will be usable in all conditions the team developed a series of specific mappings for the fuel injection. A set of KYB A-Kit Factory suspension the make bike capable of dealing with the increased needs of top-level racing. The engine breathes via an Akrapovic exhaust.

Main titles
2004 Stefan Merriman: World Champion
Yamaha WR450F (EnduroGP)

Technical Specifications

Bike

  • Model:
  • WR450F
  • Engine Type:
  • 449cc liquid-cooled, 4-stroke, DOHC, 4-titanium valves
  • Carburation:
  • Keihin 44mm fuel injection, revised mappings
  • Bore x Stroke:
  • 97.0 mm x 60.8 mm
  • Compression ratio:
  • 12.5:1
  • Lubrication system:
  • Wet sump
  • Clutch type:
  • Wet, Multiple Discs, Rekluse
  • Starter system:
  • Electric and kick
  • Ignition system:
  • CDI developed by the team
  • Transmission system:
  • Constant Mesh, 5-speed
  • Final transmission:
  • DID Chain & Supersprox Sprockets
  • Exhaust:
  • Akrapovic
  • Water pump:
  • Boyesen high- ow
  • Lubricants:
  • Yamalube

Chassis

  • Frame:
  • Semi-double cradle
  • Front suspension:
  • KYB USD Factory Kit
  • Rear Suspension:
  • KYB USD Factory Kit
  • Front brake:
  • Nissin, Braking disc Ø 270 mm
  • Rear Brake:
  • Nissin, Braking disc Ø 245 mm
  • Front tyre:
  • 90/90-21
  • Rear tyre:
  • 140/90-18
  • Triple clamps:
  • X-Trig
  • Bars:
  • Neken aluminium
  • Plastics & Handguards:
  • UFO Plast
  • Fuel tank:
  • Carbon bre
  • Air Filter:
  • Twin Air
  • Sump guard:
  • AXP
  • Graphics:
  • Kutvek
  • Wheel hubs:
  • KITE

Dimensions

  • Overall length:
  • 2,165 mm
  • Overall width:
  • 825 mm
  • Overall height:
  • 1,280 mm
  • Seat height:
  • 965 mm
  • Wheel base:
  • 1,465 mm
  • Minimum ground clearance:
  • 325 mm
  • Wet weight (including full oil and fuel tank):
  • 118kg
  • Fuel tank capacity:
  • 7.5 litres