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2021 YZ450FX
2021 YZ450FX
2021 YZ450FX
2021 YZ450FX
Product Details:
The YZ450FX runs all the latest frame, suspension, engine and electronics upgrades found on the YZ450F – including the Yamaha’s exclusive smartphone tuning. We’ve developed the FX specifically for off-road competition. So as well as enduro engine and suspension settings.
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Product Description

The YZ450FX is designed for enduro and cross country racing right out of the crate. Sharing the YZ450F’s revolutionary rearward-slanted cylinder design, with a reversed cylinder head and forward-positioned straight intake, the YZ450FX delivers a controllable, torquey power character with strong top-end power tuned specifically for cross-country racing.

  • Headlight assembly with horn pre-fitted
  • Braided steel front brake line
  • Tail light and licence plate holder with two mounting screws and two harness mounts
  • Rear brake light switch
  • Wiring harness with cable ties for attachment
  • LH handlebar switch
  • RH mirror
  • Hand guard set

YZ450F’s revolutionary rearward-slanted-cylinder design is an innovative approach to achieve unmatched mass centralisation. Concentrating the motorcycle’s heaviest components (engine mass, fuel tank, exhaust system, and airbox) toward the centre of the machine helps achieve superior, nimble handling.

The same Bilateral Beam frame that is found on the championship winning YZ450F is used on the new YZ450FX. It places the engine and fuel tank close to the centre mass of the bike for extremely light and nimble handling character.

A new layout for the fuel tank and air cleaner box gives the machine a slimmer feeling between the legs as well as position's the fuel tank mass closer to the centre of the bike which improves handling feel. Furthermore, the air box can now be accessed with quick release fastners for easy serviceability of the large air cleaner element.

270mm front disc brake offers outstanding machine control and performance, with exceptional stopping power and controllability.

Optional accessory, GYTR Power Tuner lets bike tuners adjust air/fuel mixture and ignition timing maps to match engine performance characteristics to the rider and track conditions.

Engine TypeLiquid-cooled, DOHC 4-stroke, 4 titanium valves
Displacement449 cc
Bore x Stroke97.0 x 60.8 mm
Compression Ratio12.5 : 1
Fuel ManagementEFI
Starter SystemElectric/Kick
Fuel Tank Capacity7.5 L
Final TransmissionChain
Length2165 mm
Width825 mm
Height1280 mm
Seat Height965 mm
Wheelbase1465 mm
Ground Clearance325 mm
Dry Weight112 kg
Wet Weight119 kg with 7.5 litres of fuel
Frame TypeBilateral Beam
Suspension FrontTelescopic fork, 310mm travel
Suspension RearSwingarm,link suspension, 318mm travel
Brakes FrontSingle disc, Ø 270mm
Brakes RearSingle disc, Ø 245mm
Tyres Front90/90-21 Dunlop AT81F
Tyres Rear120/90-18 Dunlop AT81