New Yamaha YZ 450F Motocross Motorcycles for sale

LIGHTER, SLIMMER, SHARPER, FASTER
The unique reverse-head engine is a perfect example of how Yamaha technology can make you a better rider. Its strong and linear power gives you the absolute control required to achieve faster lap times.

Its lightweight aluminium frame and best-in-class KYB suspension systems deliver the cornering precision and straight-line stability you need to stay ahead – and the compact seamless bodywork combined with idealized ergonomics give you ultimate rider mobility for maximum control when accelerating, braking and cornering.

Features

Light, slim and powerful engine
This is the most powerful engine ever used in the YZ450F. Featuring a special piston, slanted cylinder and dry sump lubrication system, this lightweight and compact 450cc 4-stroke reverse-head engine delivers strong and linear power that gives you plenty of easy-to-control performance at all engine speeds.

High-capacity air intake
A key feature on the YZ450F is its front facing intake that gives you a real competitive advantage. For winning performance the intake port is designed to give a straight path to the cylinder head. Together with large 39mm titanium inlet valves, this high-efficiency intake enables the engine to rev higher for increased performance.

Disc spring clutch with enhanced cooling efficiency
To handle the high levels of power the YZ450F is equipped with a durable and compact one-piece steel clutch that minimizes engine weight and keeps engine width to a minimum. Disc springs are used instead of conventional coil springs, giving accurate feel and a light pull at the lever.

Lightweight balancer mechanism
For smooth power delivery and minimized vibration at all engine speeds the YZ450F benefits from a balancer mechanism. Featuring a single balancer weight and hollow shaft, this compact design helps to make the latest generation one of the lightest in its class.

Aluminium bilateral beam frame
The YZ450F’s aluminium bilateral beam is designed to handle the high performance of the latest generation 450cc reverse-head engine. The rigidity of the tank rails is optimized to give a controlled amount of flex for effective shock absorption – and the stiff down tube and cross tube ensure high levels of stability and precise cornering.

Seamless ergonomic bodywork
The lightweight fenders, sidepanels and airbox cover blend seamlessly, and the narrow shrouds together with the bike’s slim waist enable rapid body weight shifting for more effective handling performance. And for optimum controllability the YZ450F features a flat upper surface running from the rear of the seat through to front of the airbox.

Best-in-class KYB suspension with revised linkage and factory settings
The industry leading KYB speed sensitive front forks and rear shock, are equipped with model-specific suspension settings designed to give excellent bump absorption and high levels of traction, improved further by the new suspension linage for 2025. For easy suspension setting the forks feature a hand adjustable compression damping adjuster.

Adjustable traction control system
The YZ450F comes fitted with a traction control system with three levels of intervention as well as an OFF function.

Launch control system
For fast starts the YZ450F’s launch control system features a ‘Rev clip’ function as well as an ‘Ignition retard’ function. “Rev clip’ can be set to limit engine speed at any setting between 6.000rpm and 11.000rpm in 500rpm increments, allowing you to give your bike full throttle when the gate drops – and concentrate fully on getting the holeshot.

Race-winning details
The YZ450F boasts a wide range of top-spec details including aluminium tapered handlebars, compact PVC handlebar pad, lightweight throttle cable, wide foot pegs with lightweight aluminium alloy brackets, stylish blue rims and a lightweight gold drive chain with YZ450F-specific chain guide.

Rear duct airflow
Engine performance is optimized and body width is kept to a minimum by the rear duct airflow that channels fresh air through the space between the fuel tank, frame, seat and sidepanels. When it reaches the lightweight airbox the dirty air is pre-cleaned by a vortex that throws particles to the side, reducing air cleaner clogging and making routine maintenance easier.

Ergonomic rider triangle
As well as being the fastest, lightest and most powerful YZ450F ever, the latest bike is also designed to fit riders of varying sizes and physiques. The relationship between the flat seat, footrest position and handlebar mounting location creates a rider triangle that ensures provides idealized ergonomics with easy rider mobility.

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YZ 450F

Offer Ends 31/05/2026

Yamaha - Free Health Check

Yamaha - Free 12 months Roadside Assistance

YZ 450F

Offer Ends 31/03/2026

Yamaha - Free 12 months Roadside Assistance

Your Yamaha looks after you — now let us return the favour.

We’re offering a FREE motorcycle or scooter health check at participating authorised Yamaha dealers across the UK. There’s no catch, no obligation, and no pressure. Just expert eyes giving your bike a once-over so you can ride with confidence.

What’s included?
A trained Yamaha technician will check the key components of your bike, helping to spot potential issues early and make sure everything’s working as it should.

Who's it for?

Any Yamaha model
Any age
Any mileage

If it’s a Yamaha, it’s welcome.

Why book one?

Peace of mind before your next ride
Expert inspection by Yamaha-trained technicians
Completely free, with no obligation to carry out further work. If anything does need attention, you’ll be informed clearly — the choice is always yours.

How to get yours?

Simply fill in the form here, then contact {site_title} to book a convenient date and time. Note: dates are subject to availability.

Terms & Conditions

Dealer Participation and Conditions

The Vehicle Health Check is provided subject to the individual terms and conditions of the participating authorised Yamaha dealer.
Participating dealers may decline to undertake inspection, servicing, or repair work on vehicles that exceed a specified age, mileage, or condition threshold.
Customers are strongly advised to contact their chosen dealer in advance to confirm eligibility and acceptance before applying for a free health check voucher.

Bookings

The free health check is valid until 31st December 2026.
Once customers have entered their details on the online form, customers need to book their health check direct with participating Authorised Yamaha Dealers.
Bookings days and times are subject to availability and will be confirmed by the dealer with the customer at the point of booking.
Customers will need to present their free health check email (received once the online form is complete) to their participating Authorised Yamaha Dealer on the day of the health check.

Electronic Health Check Compatibility

Motorcycles manufactured prior to 2015 may not be compatible with, or eligible for, an electronic health check due to non-compatibility with the Yamaha diagnostic systems.

Proof of Ownership

Customers may be required to present a valid V5 registration document, or equivalent proof of ownership, together with their health check voucher to the selected authorised Yamaha dealer at the time of the vehicle health check, as evidence that they are the registered keeper.

Failure to Provide Documentation

Failure to present the required documentation may result in the authorised dealer refusing to carry out the complimentary vehicle health check.

General

Neither Yamaha Motor nor the authorised dealer shall be liable for any pre-existing damage, defects or faults, or normal wear and tear.
Customers authorise the authorised dealer to carry out the agreed inspection or repair work. Any recommended additional work identified will be communicated and authorised by the customer prior to completion.
Motorcycles not collected within one working day of notification that work has been completed may be subject to reasonable storage charge.

Service your Yamaha motorcycle or scooter at a participating Official Yamaha Dealership** before March 31st 2026 and receive 12 months free YOU Yamaha Road Assistance*. Things like punctures and flat batteries can happen to anyone, but our breakdown cover gives you peace of mind so that you can ride without worry.

*Terms & Conditions
Eligibility:
The offer is open to anyone who has any service from the Yamaha service schedule using Genuine Yamaha Parts at participating Official Yamaha Dealers.
The service needs to take place between 1 November 2025 until 31 March 2026.
The service must be on a Yamaha motorcycle or scooter.
Machines within 2 years of warranty registration are not eligible for this offer.
The customer will need to complete and sign a form with their dealer at the time of the service for the application to be submitted.
Offer excludes services on any off-road competition or non-road going Yamaha models.

The Offer:
Receive free 12 months YOU Yamaha Motor Road Assistance - Conditions apply - for full details see https://www.yamaha-motor.eu/gb/en/service-support/yamaha-assist/
At the end of the year, there is an option to extend the cover for a further year, at the cost of the policy holder (subject to eligibility).

General Terms and Conditions:
The Promoter reserves the right to cancel or award a different offer up to the same value due to circumstances beyond their control.
The Promoter's decision is final and no correspondence will be entered into.
The offer is non-transferable and cannot be exchanged for cash or other prizes, or passed onto another person when the motorcycle or scooter is sold.
The Promoter is not responsible for lost entries.
Any personal data relating to competition entrants will be used in accordance with the Promoter’s privacy policy which can be found here.
The Promoter is Yamaha Motor Europe NV, Branch UK of Units A2-A3, Kingswey Business Park, Forsyth Road, Woking, Surrey GU21 5SA.

Engine

Engine type	Liquid-cooled, Rear ward slanting single cylinder, 4-stroke, 4-valves, DOHC
Displacement	450
Bore x stroke	97.0 × 60.8 mm
Compression ratio	13,0 : 1
Maximum power
Maximum torque
Lubrication system	Wet sump
Clutch type	Wet, Multiple Disc
Ignition system	TCI
Starter system	Electric
Transmission system	5-speed, Constant Mesh
Final transmission	Chain
Fuel consumption	Fuel Injection

Chassis

Frame	Semi double cradle
Caster angle	26° 55′
Trail	120 mm
Front suspension system	Upside-down telescopic fork
Rear suspension system	Swingarm, (link suspension)
Front travel	310 mm
Rear travel	317 mm
Front brake	Hydraulic Single Disc, Ø270 mm
Rear brake	Hydraulic Single Disc, Ø240 mm
Front tyre	80/100-21 51M Tube type
Rear tyre	120/80-19 63M Tube type

Dimensions

Overall length	2185 mm
Overall width	825 mm
Overall height	1285 mm
Seat height	965 mm
Wheel base	1485 mm
Minimum ground clearance	330 mm
Wet weight (including full oil and fuel tank)	111 kg
Fuel tank capacity	6.2 L
Oil tank capacity	0.9 L

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