Yamaha YZ450FX Top Speed, Price, Specs ❤️ Review

Yamaha YZ450FX Top Speed, Price, Specs, Review, Horsepower, Seat Height, Weight, Overview

Yamaha YZ450FX Top Speed, Price, Specs

The YZ450FX is designed from Yamaha’s flagship motocross model—the YZ450F—with unique settings and many added features that make the YZ450FX the ultimate GNCC®/Woods racer.

The Yamaha YZ450FX’s distinct rearward-slanted cylinder design—complete with rear exhaust and forward-mounted downdraft intake system—features a cylinder head that works with the frame geometry for optimized weight distribution.

The Yamaha YZ450FX engine features a straight intake tract, aggressive cam profiles, a high-compression “box bridge” piston design with a DLC-coated piston pin. Finally, the Yamaha YZ450FX features specific ECU settings to suit the needs of cross-country riders.

Yamaha’s exclusive Power Tuner application sets the flexibility and accuracy tunability of the GYTR Power Tuner into your smartphone. 

Make fueling and ignition timing changes immediately and upload them to the Yamaha YZ450FX bike for the ultimate in track-side tuning.

A handlebar-mounted map switch enables the biker to quickly choose between preloaded engine maps—loaded and configured in the Power Tuner application to account for changing track and weather conditions.

Utilizing a compact starter motor and ultra-lightweight lithium battery, the Yamaha YZ450FX bike maintains the effortless restarts under pressure, the convenience of push-button starting, and relaxed riding the clock isn’t ticking.

A high-compression cylinder head, aggressive cam profiles, forged piston, cylinder geometry and much more work together to provide riders the perfect power spread in challenging GNCC racing conditions.

The Yamaha YZF450FX’s wide-ratio 5-speed transmission and durable clutch components enhance cross-country performance for confident shifting and more flexible gear choice in open terrain.

The Yamaha YZ450FX features stylish bodywork from tip to tail, including a large 2.15-gallon mass-centralized fuel tank. The Yamaha YZ450FX body design is narrow for a more comfortable knee grip and control feeling. In contrast, the narrower and lower seat gives the rider additional room to move aboard the machine.

The free-of-charge Yamaha Power Tuner application brings the power of the GYTR Power Tuner to your Android® or iOS® device. Using wireless connectivity to talk to the bike’s onboard CAN-bus network,

the Yamaha Power Tuner app allows owners to adjust air/fuel mixture and ignition timing maps to tune engine performance for track conditions, record race log information and monitor a range of data such as maintenance and system diagnosis, engine run time and more. 

Yamaha YZ450FX Price in USA 2024

Yamaha YZ450FX Price

➥ Price Starting at $9,999 USD

Destination Charge: $450 Freight Surcharge: $275*****

Yamaha YZ450FX Top Speed

➥ Top Speed: 91 mph (Est.) 

The top speed of the Yamaha YZ450FX is 91 mph, calculated on a closed road.

Yamaha YZ450FX Horsepower

➥Horsepower: 53.0 hp @ 9,600 rpm

Yamaha YZ450FX Seat Height

➥Seat Height: 37.6 in

Yamaha YZ450FX Weight

➥Weight: 256 lb

Yamaha YZ450FX Key Features

  • Engine Type: 449cc liquid-cooled DOHC 4-stroke; 4 titanium valves
  • Transmission: Constant-mesh wide-ratio 5-speed; multiplate wet clutch
  • L x W x H: 85.6 in x 32.5 in x 50.0 in
  • Seat Height: 37.6 in
  • Maximum Ground Clearance: 12.6 in
  • Fuel Capacity:2.2 gal
  • Wet Weight: 256 lb
  • 30 Day (Limited Factory Warranty)

Yamaha YZ450FX Specifications

Yamaha YZ450FX Specs


Engine Type 449cc liquid-cooled DOHC 4-stroke; 4 titanium valves
Bore x Stroke 97.0mm × 60.9mm
Compression Ratio 12.8:1
Fuel Delivery Mikuni® fuel injection, 44mm
Transmission Constant-mesh wide-ratio 5-speed; multiplate wet clutch
Final Drive Chain


Suspension / Front KYB® Speed-Sensitive System inverted fork; fully adjustable, 12.2-in travel
Suspension / Rear KYB® single shock; fully adjustable, 12.5-in travel
Brakes / Front Hydraulic disc, 270mm
Brakes / Rear Hydraulic disc, 245mm
Tires / Front 80/100-21
Tires / Rear 120/80-18


L x W x H 85.6 in x 32.5 in x 50.0 in
Seat Height 37.6 in
Wheelbase 58.3 in
Rake (Caster Angle) 27.2°
Trail 4.6 in
Maximum Ground Clearance 12.6 in
Fuel Capacity 2.2 gal
Wet Weight 256 lb


Warranty 30 Day (Limited Factory Warranty)


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Q. How much does a YZ450FX cost?

A. $9,999 USD

Q. How much HP does a YZ450FX have?

A. 53.0 hp

Q. How fast does a Yamaha YZ450FX go?

A. 80 mph (Est.) 

Q. How many gears does a YZ450FX have?

A. five-speed
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