BRZ 70cc Kids Automatic Off Road Dirt Bike

BRZ 70cc Automatic Petrol Dirt Bike

70CC 4-STROKE. FULLY AUTOMATIC. UP TO 35MPH. HYDRAULIC DISC BRAKES. 12”/10” WHEELS. 🏁⛽

The BRZ 70cc Automatic Dirt Bike is a great step up for young riders looking for a proper petrol-powered off-road bike.

Powered by a 70cc 4-stroke engine and a fully automatic transmission, the BRZ keeps things simple — no manual clutch and no conventional gear changing. Just start it, twist the throttle and ride.

With a claimed top speed of approximately 35mph, electric start, hydraulic disc brakes and a compact 12”/10” wheel setup, this is a substantial little dirt bike designed for suitable private-land riding. 

⚡ Key Features

• 🔥 70cc 4-stroke single-cylinder engine
• ⚙️ Fully automatic transmission
• 🔗 Chain drive
• 🚀 Claimed top speed up to 35mph*
• 🔑 Electric start
• 🔥 CDI ignition
• 🛑 Hydraulic disc brakes front & rear
• 🛞 12” front / 10” rear wheels
• 🏗️ Steel rims
• 📏 Approx. 58cm seat height
• 📐 Approx. 90cm wheelbase
• 📏 Approx. 15cm ground clearance
• ⛽ 3.5L fuel tank
• ⚖️ Approx. 50kg net weight
• 👦 Designed as a kids/junior automatic pit bike
• 🎨 White or Orange

🔥 70cc 4-Stroke Engine

The BRZ is powered by a 70cc single-cylinder, air-cooled 4-stroke petrol engine.

The additional engine capacity over a 50cc machine gives the BRZ a noticeable step up in performance while retaining the simplicity of an automatic drivetrain.

It’s a straightforward engine layout that’s well suited to recreational off-road riding and regular maintenance.

⚙️ Fully Automatic Transmission

The BRZ uses a fully automatic chain transmission.

There’s no manual clutch or conventional gear changes for the rider to worry about.

Simply start the bike, twist the throttle and concentrate on steering, braking and getting used to the bike.

This makes it particularly suitable for riders progressing from smaller automatic bikes.

🚀 Up To Approximately 35MPH*

The BRZ 70cc has a claimed top speed of approximately 35mph.

Actual speed will vary depending on rider weight, terrain, conditions, vehicle setup and other factors, so the quoted figure should be treated as a guide rather than a guaranteed speed. 

🔑 Electric Start

Starting the BRZ is simple thanks to its electric start system.

The bike uses a CDI ignition system, giving the 70cc engine a straightforward electronic ignition setup.

No need to rely solely on a traditional kick-start — press the starter and get riding.

🛑 Hydraulic Disc Brakes

The BRZ 70cc is equipped with hydraulic disc brakes front and rear.

That’s a worthwhile specification on a bike capable of the claimed speeds, giving the rider braking at both ends of the bike.

As with any off-road vehicle, brakes should be inspected regularly and checked before every ride.

🛞 12”/10” Off-Road Wheels

The BRZ uses a 12” front / 10” rear wheel combination.

The smaller wheel configuration keeps the bike compact for younger riders while still giving it the proportions and appearance of a proper pit bike.

The wheels use steel rims and are designed around off-road riding. 

📏 58CM Seat Height

The BRZ has an approximate 58cm seat height, making rider fit particularly important when choosing the bike.

It also has:

Wheelbase: 90cm
Ground clearance: 15cm
Overall dimensions: 132 × 57 × 80cm

With a net weight of approximately 50kg, this is a substantial machine for a junior dirt bike. 

⛽ 3.5-Litre Fuel Tank

The BRZ is fitted with a 3.5-litre fuel tank.

The 4-stroke engine keeps the fuel system straightforward, with no 2-stroke petrol/oil premixing required.

🏗️ Built For Off-Road Riding

The BRZ features a steel chassis and compact pit-bike layout designed around recreational off-road riding.

With 15cm of ground clearance, 12”/10” wheels and hydraulic disc brakes, it offers a proper little dirt-bike package rather than a toy-style motorcycle.

👤 Is The BRZ 70cc Right For Your Rider?

The BRZ 70cc sits nicely between the smaller KLF Pro Racer 50cc and the larger semi-automatic BRZ bikes.

Want something smaller?

The KLF Pro Racer 50cc is a smaller 2-stroke automatic option with a lower seat height and lighter overall package.

Want more power?

The BRZ Semi-Automatic 110cc is the next major step up, with a larger engine and semi-automatic transmission.

For older or more experienced riders, CMW Bikes also stocks larger 125cc, 140cc, 160cc and 250cc petrol dirt bikes.

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

📦 What’s Included?

• BRZ 70cc Automatic Petrol Dirt Bike
• 3.5L fuel tank
• Electric start system
• CDI ignition
• Hydraulic front & rear disc brakes
• User/assembly documentation
• Assembly tools where supplied

Assembly Options

Boxed: Self assembly required

Fully assembled: +£69

The current CMW listing offers the BRZ boxed or assembled for +£69. 

⚠️ Important Information – Off-Road Use

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

These are mechanical petrol vehicles and require routine maintenance, inspection and correct setup.

Please ensure:

• Brakes, chain, tyres, bolts and controls are checked regularly
• Appropriate protective equipment is worn
• The rider is suitably experienced for the vehicle
• A responsible adult supervises younger riders
• The vehicle is used responsibly and lawfully
• Permission is obtained from the landowner before riding on private land

🛠️ 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

🚚 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.

🏁 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 BRZ, KLF, Dazzle, Stomp, Kayo, Revvi, VIPCOO and more, with options for younger riders, juniors and adults.

Whether you’re looking for a first petrol dirt bike like the BRZ 70cc or stepping up to something larger and more powerful, we’re here to help you find the right machine.

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