Starting from £5,450
Yamaha has been building championship winning 2-stroke motocross bikes for 50 years. Along the way we've won just about every title worth winning. The latest YZ85 comes with the same advanced race-bred technology that goes into the company's adult motocross machines and is ready to power you into the victorYZone.
Victory: Never given, always earned.
Many of today’s pro riders started their careers on the YZ85. And when you take a look at what this bike has to offer you can see why. Its high performance 85cc liquid-cooled 2-stroke engine is equipped with Yamaha’s race-bred YPVS that gives you holeshot-winning acceleration. And its adjustable suspension systems are built to master the toughest tracks.
The YZ85 also comes with a lightweight aluminium rear frame and aluminium swingarm, large diameter disc brakes and a high-efficiency air intake – just like the bigger YZ125. For maximum rider control there’s a flat seat, slim body and an ergonomic fuel tank. And with the updated Icon Blue colourway and new graphics completing the looks, the YZ85 is ready to power you to the next level.
Features
Slim bodywork
The YZ85 is equipped with dynamic slimline bodywork inspired by the YZ125. Uniform and narrow radiator shrouds give an aggressive and balanced look that underlines the YZ85's winning heritage.
Flat seat and ergonomic fuel tank
A flat seat and ergonomic fuel tank allow for easy front/rear weight shifting for optimum control. The seat design accommodates a single bolt seat fixing, making routine maintenance easy and quick.
Lightweight aluminium rear subframe
A detachable aluminium rear subframe helps to keep the YZ85's weight to a minimum and also contributes towards the bike's lightweight agility by centralising mass.
Aluminium swingarm
The YZ85 is equipped with an aluminium swingarm featuring a finely tuned rigidity balance that contributes towards chassis stability and helps to achieve high levels of rear wheel traction.
85cc liquid cooled 2-stroke engine with YPVS
The 85cc liquid cooled engine benefits from the Yamaha Power Valve System (YPVS) that boosts overall performance and contributes towards the bike's easy-to-use torque. Running with a high compression ratio – and equipped with a close ratio 6-speed transmission – the YZ85 delivers outstanding acceleration with race winning power.
High-efficiency air intake system
The air intake system incorporates side panels with large rear facing vents that are specifically designed to give a straight airflow into the engine's airbox for high levels of intake efficiency and improved engine performance.
Fully adjustable 36mm KYB upside down front forks
Featuring specially machined one-piece tapered outer tubes to match the rigidity balance of the frame – and equipped with 36mm inner tubes – the upside down KYB front forks provide optimised damping settings. Combined with the fully adjustable low friction cartridge design, the YZ85 has the most sophisticated front fork design ever used on a youth YZ motocross bike.
Link-type Monocross rear suspension
Like the front forks, the Monocross rear suspension is directly descended from the advanced technology used on Yamaha's factory race bikes. The aluminium swingarm activates the progressive link-type Monocross suspension to give 287 mm of rear wheel travel, that can handle everything from washboard sections through to hard landings.
Self-cleaning wave discs
For powerful and controllable braking the YZ85 features self-cleaning wave type discs – with a 220mm front and 190mm rear. And for linear rear braking and plenty of feel there's a one-piece rear master cylinder with a built-in sub-reservoir.
YZ 85
Offer Ends 31/03/2026
Yamaha - Free 12 months Roadside Assistance

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 type | Liquid-cooled, Single cylinder, Reed valve with YPVS, 2-stroke |
| Displacement | 85cc |
| Bore x stroke | 47.5 × 47.8 mm |
| Compression ratio | 8,2 - 9,6 : 1 |
| Lubrication system | Premix |
| Clutch type | Wet, Multiple Disc |
| Ignition system | CDI |
| Starter system | Kick |
| Transmission system | Constant Mesh, 6-speed |
| Final transmission | Chain |
| Fuel system | Keihin PWK28/1 |
| Frame | Semi double cradle |
| Caster angle | 26° 00′ |
| Trail | 99 mm |
| Front suspension system | Telescopic fork |
| Rear suspension system | Swingarm, (Link type suspension) |
| Front travel | 275 mm |
| Rear travel | 287 mm |
| Front brake | Hydraulic Single Disc, Ø220 mm |
| Rear brake | Hydraulic Single Disc, Ø190 mm |
| Front tyre | 70/100-19 42M Tube type |
| Rear tyre | 90/100-16 52M Tube type |
| Overall length | 1895 mm |
| Overall width | 760 mm |
| Overall height | 1175 mm |
| Seat height | 885 mm |
| Wheel base | 1285 mm |
| Minimum ground clearance | 360 mm |
| Wet weight (including full oil and fuel tank) | 75 kg |
| Fuel tank capacity | 5.0 L |
| Oil tank capacity | 0.5 L |
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