What category is the 2018 Yamaha YZ450FX?

The 2018 Yamaha YZ450FX has a Category of Enduro / offroad.

What type of engine does the 2018 Yamaha YZ450FX have?

The 2018 Yamaha YZ450FX has a Engine type of Single cylinder, four-stroke.

Is the 2018 Yamaha YZ450FX air cooled or liquid cooled?

The 2018 Yamaha YZ450FX has a Cooling system of Liquid.

How many gears does the 2018 Yamaha YZ450FX have?

The 2018 Yamaha YZ450FX has a Gearbox of 5-speed.

How much does the 2018 Yamaha YZ450FX weigh?

The 2018 Yamaha YZ450FX has a Weight incl. oil, gas, etc of 118.8 kg (262.0 pounds).

What is the seat height of the 2018 Yamaha YZ450FX?

The 2018 Yamaha YZ450FX has a Seat height of 965 mm (38.0 inches) If adjustable, lowest setting..

Yamaha YZ450FX - 2018 Specifications and Reviews

Name: 2018 Yamaha YZ450FX
Brand: Yamaha

The 2018 Yamaha YZ450FX is a four-stroke motocross bike engineered for intermediate to advanced riders seeking a versatile off-road machine. Known for its electric starter convenience and manageable 118.8 kg weight, it excels in varying terrain conditions while delivering reliable performance through its 5-speed transmission. The YZ450FX balances power delivery with user-friendly characteristics, making it ideal for weekend warriors and competitive riders alike.

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2018

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General information
Category	Enduro / offroad
Year	2018
Model	Yamaha YZ450FX

Engine and Transmission Specifications
Driveline	O-ring chain
Clutch	Wet multi-disc
Transmission type,final drive	Chain
Gearbox	5-speed
Cooling system	Liquid
Lubrication system	Wet sump
Ignition	TCI
Fuel control	Double Overhead Cams/Twin Cam (DOHC)
Fuel system	Injection. Keihin 44mm
Valves per cylinder	4
Bore x Stroke	97.0 x 60.8 mm (3.8 x 2.4 inches)
Compression	12.5:1
Engine details	Titanium valves
Engine type	Single cylinder, four-stroke

Brakes, suspension, Frame and wheels
Wheels	Dunlop® AT81F tyres
Rear brakes diameter	245 mm (9.6 inches)
Rear brakes	Single disc. Hydraulic
Front brakes diameter	270 mm (10.6 inches)
Front brakes	Single disc. Hydraulic
Rear tyre	120/90-18
Front tyre	90/90-21
Rear wheel travel	318 mm (12.5 inches)
Rear Suspension	KYB® single shock; full adjustable
Front wheel travel	310 mm (12.2 inches)
Front Suspension	KYB® spring-type fork with speed sensitive damping; fully adjustable
Rake (fork angle)	28.0°
Frame type	Aluminum Bilateral Beam frame
Physical measures and capacities
Fuel capacity	7.57 litres (2.00 gallons)
Wheelbase	2,164 mm (85.2 inches)
Ground clearance	335 mm (13.2 inches)
Overall width	826 mm (32.5 inches)
Overall length	2,174 mm (85.6 inches)
Overall height	1,290 mm (50.8 inches)
Seat height	965 mm (38.0 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc	118.8 kg (262.0 pounds)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Factory warranty	30 Day Limited Factory Warranty
Starter	Electric
Color options	Team Yamaha Blue

Performance Profile & Rider Fit

Best For

Track55%

City15%

Cornering70%

Daily Riding20%

Touring15%

Passenger5%

Rider Profile

Best For	Best suited to intermediate to expert off-road riders who are comfortable with a tall, light, aggressive cross-country race bike.
Purpose	Built for closed-course cross-country and enduro-style off-road riding rather than street use or commuting.
Rider Fit	The tall 37.6 in seat height and minimal weight-carrying comfort favor taller, fit riders confident standing on the pegs for extended periods.
Character	A high-revving, race-derived thumper that rewards an aggressive, momentum-focused riding style with sharp handling and light overall mass.
Not Ideal For	Not a good fit for new riders, passengers, highway commuting, or anyone wanting plush comfort and long-range touring capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2018 Yamaha YZ450FX Rider Ergonomics Assessment

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Feet:

At 965mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2018 Yamaha YZ450FX, with a cramped knee angle of around 85 degrees and a slightly forward riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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Rider Reviews

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MotorcycleDB Review

The 2018 Yamaha YZ450FX is a high-performance off-road motorcycle designed for the most demanding trails. With its powerful 450cc engine and lightweight frame, this bike delivers impressive speed and agility in the toughest off-road conditions. The YZ450FX also features advanced suspension and handling, making it a top choice for riders who want to push the limits of their off-road adventures. Whether you're tackling rocky terrain or navigating through tight corners, the YZ450FX provides the reliability and performance you need to conquer any trail. If you're looking for a top-of-the-line off-road motorcycle, the 2018 Yamaha YZ450FX is a fantastic option. Its powerful engine, lightweight design, and advanced suspension make it a versatile and capable choice for riders of all skill levels. Whether you're a seasoned off-road enthusiast or a beginner looking to elevate your riding experience, the YZ450FX delivers the performance and handling you need to take on any trail with confidence.