Kayo AU150 (Semi Automatic) Quad Bike

Kayo AU150 Semi-Automatic Quad Bike

150CC 4-STROKE. SEMI-AUTOMATIC. REVERSE. 3-SPEED GEARBOX. UTILITY ATV. 🏁🔥

The Kayo AU150 is a serious little utility ATV designed for riders who need more than just a recreational quad.

Developed by Kayo, from the manufacturers of Stomp Pit Bikes, the AU150 was designed over four years with a focus on durability, capability and off-road performance.

Powered by a 149.6cc air-cooled 4-stroke engine, the AU150 combines a semi-automatic transmission with reverse, hydraulic disc brakes, adjustable suspension and useful front and rear carrying racks.

It’s compact enough to work where a full-size ATV would simply be too large, while still providing the ground clearance, low-speed control and carrying capacity you’d expect from a proper utility quad.

Whether you’re using it around a smallholding, farm, private land or simply looking for a capable recreational ATV, the AU150 is built to work.

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⚡ Key Features

• 🔥 149.6cc 4-stroke engine
• 🌬️ Air-cooled SOHC engine
• ⚙️ Semi-automatic transmission
• 🔄 Reverse, neutral & 1-2-3 forward gears
• 🔑 Electric start
• ⚡ CDI ignition
• 💪 5.8kW @ 7,500rpm
• 💥 8.3Nm @ 6,000rpm
• 🛑 3 hydraulic disc brakes
• 💥 270mm front suspension
• 💥 280mm rear suspension
• 🛞 10×9 front tyres
• 🛞 10×9 rear tyres
• ⛓️ Chain final drive
• 🏗️ Utility-style chassis
• 🧺 Front & rear carrying racks
• 🛡️ Wrap-around plastics
• ⛽ 5.5L fuel tank
• 📏 Approx. 740mm seat height
• 📏 Approx. 140mm ground clearance
• 📏 Approx. 1080mm wheelbase
• ⚖️ Approx. 155kg dry weight
• 👤 Suitable from approximately 10 years+, depending on rider size and experience

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🔥 149.6cc 4-Stroke Engine

At the heart of the AU150 is a 149.6cc single-cylinder 4-stroke, air-cooled engine.

The engine uses a SOHC 2-valve configuration and is designed around a straightforward, serviceable mechanical package.

Kayo lists maximum power at:

5.8kW @ 7,500rpm

and maximum torque at:

8.3Nm @ 6,000rpm

The engine is deliberately suited to the AU150’s utility role, giving the quad useful low-speed control while providing enough capacity to tackle uneven ground, inclines and general private-land use.

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⚙️ Semi-Automatic Transmission

The AU150 uses a semi-automatic transmission with reverse.

The gear selection is:

R → N → 1 → 2 → 3

This gives the rider considerably more control than a conventional fully automatic recreational quad while avoiding the need for a traditional manual clutch.

The rider can select lower gears when more control is required and move up through the three forward gears when travelling across more open terrain.

Reverse also makes manoeuvring around smallholdings, trailers, buildings and other confined areas considerably easier.

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🔑 Electric Start

The AU150 uses electric start, making starting the quad straightforward.

The ignition system uses CDI, while the 4-stroke engine keeps the mechanical package relatively simple and serviceable.

This is particularly useful for a utility ATV that may be used regularly rather than simply being taken out for occasional recreational riding.

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💥 Front & Rear Suspension

The AU150 features dedicated front and rear suspension designed around its utility ATV chassis.

Front

270mm suspension

Rear

280mm suspension

The suspension is designed to handle uneven ground and changing terrain while maintaining the compact dimensions of the AU150.

The current specification lists the front and rear suspension as non-adjustable. 

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🛑 Triple Hydraulic Disc Brakes

The AU150 comes equipped with three hydraulic disc brakes.

Hydraulic braking is fitted across the ATV’s braking system, giving the rider dedicated braking control rather than relying on basic drum brakes.

The hydraulic braking system is designed around the AU150’s 155kg dry weight and utility chassis.

As always, brakes should be checked before riding and maintained regularly.

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🛞 10×9 Utility ATV Wheels

The AU150 uses 10×9 tyres front and rear.

The compact wheel setup works with the quad’s relatively high 140mm ground clearance, helping it remain manoeuvrable while tackling suitable off-road terrain.

The wheels and tyres are designed around the AU150’s utility-focused role rather than outright high-speed riding.

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🧺 Front & Rear Carrying Racks

One of the AU150’s biggest differences compared with a conventional recreational quad is its utility equipment.

The quad features front and rear carrying racks, giving riders useful space for transporting equipment, tools and other items around private land.

The wrap-around plastics also provide additional protection from mud and debris while helping keep the rider covered when travelling across wet ground.

This makes the AU150 particularly suited to:

• Smallholdings
• Private land
• Farm use
• Maintenance work
• Moving tools and equipment
• General recreational utility use

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🏗️ Compact Utility ATV Chassis

The AU150 was developed specifically as a compact utility ATV.

Its dimensions are approximately:

Length: 1,690mm
Width: 975mm
Height: 1,010mm

With a 1,080mm wheelbase, the AU150 remains considerably more compact than many full-size utility ATVs.

That makes it useful in areas where a larger ATV would be difficult to manoeuvre.

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⛽ 5.5L Fuel Tank

The AU150 features a 5.5-litre fuel tank, providing useful fuel capacity for regular riding and utility work.

The 149.6cc 4-stroke engine is air-cooled and designed around straightforward servicing and maintenance.

As with any petrol ATV, regular oil checks, servicing and general mechanical inspections are essential.

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📏 Compact Utility ATV Dimensions

The AU150 has an approximate:

Length: 1,690mm
Width: 975mm
Height: 1,010mm
Wheelbase: 1,080mm
Seat height: 740mm
Ground clearance: 140mm
Dry weight: 155kg
Fuel capacity: 5.5L

The 740mm seat height makes rider fit particularly important.

We recommend choosing an ATV based on rider height, weight, ability and experience, rather than age alone.

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👤 Is The Kayo AU150 Right For You?

The AU150 is designed for riders who want a more capable ATV with a useful combination of performance and utility.

Want a smaller youth ATV?

The Kayo A70 is a much smaller 71.79cc automatic quad with a 605mm seat height and 78kg dry weight, making it considerably more compact.

Want a 110cc performance quad?

The Kayo A110 moves up to a 106.7cc 4-stroke engine with 16×8-7 wheels, adjustable suspension and hydraulic disc brakes.

Want more utility and carrying capability?

That’s where the Kayo AU150 comes in.

With its 149.6cc engine, semi-automatic transmission, reverse, front and rear racks, 140mm ground clearance and 155kg chassis, it’s designed to do considerably more than simply provide recreational riding.

If you’re unsure which quad is right for you, contact CMW Bikes before ordering and we’ll help you choose based on rider height, weight, experience and intended use.

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📦 What’s Included?

• Kayo AU150 Semi-Automatic Quad Bike
• User/assembly documentation
• Assembly tools where supplied

Assembly Options

Boxed: Self assembly required

Fully assembled: +£99

The current CMW listing offers the fully assembled option for +£99. 

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⚠️ Important Information – Off-Road Use

All vehicles supplied by CMW Bikes are intended for off-road/private-land use only unless specifically stated otherwise.

The Kayo AU150 is a mechanical petrol ATV and requires regular maintenance, inspection and correct setup.

Please ensure:

• Brakes, chain, tyres, bolts and controls are checked regularly
• Engine oil is checked and maintained correctly
• Appropriate protective equipment is worn
• The rider is suitably experienced for a 150cc semi-automatic ATV
• The quad is checked before every ride
• Loads carried on the racks are secured appropriately
• The vehicle is used responsibly and lawfully
• Permission is obtained from the landowner before riding on private land
• Younger riders are appropriately supervised by a responsible adult

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🛠️ Warranty Information

Petrol vehicles include a 30-day replacement parts warranty.

The warranty covers manufacturing faults only and does not cover normal wear and tear, misuse, accident damage or maintenance-related issues. 

Warranty exclusions include:

• Chains, belts and split links
• Tyres, tubes and wheels
• Brake components
• Clutches and pull starts
• Fairings and bodywork
• Spark plugs and similar service items
• Other parts subject to normal wear and tear

Customers may be required to provide photographs/videos of faults and fit replacement parts themselves where appropriate.

Technical guidance can be provided.

Nothing in these terms affects your statutory rights under UK consumer law.

View our full Terms & Conditions:
CMW Bikes Terms & Conditions⁠

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🚚 Shipping & Collection

Multiple shipping options are displayed at checkout.

We always aim to dispatch orders as quickly as possible, although slight delays can occur during busy periods.

If you select fully assembled, this can add 1–2 business days during particularly busy periods.

Local delivery and collection options are available at checkout.

Some stock is held at our distribution centre and may need to be transferred to our Cardiff store before collection.

📞 Call 07745 557756 before ordering if you need to check local stock urgently. 

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🏁 CMW BIKES

At CMW Bikes, we’re Cardiff’s local off-road dealer specialising in petrol and electric bikes, quads and scooters.

We stock a wide range of machines from Stomp, BRZ, KLF, Dazzle, Kayo, Revvi, VIPCOO and more, with options for younger riders, juniors and adults.

Whether you’re looking for a first petrol quad, progressing into a larger machine or need a compact utility ATV for private land, we’re here to help you find the right quad.

CMW Bikes – Cardiff’s local off-road dealer.