Quick answer: The RFN Warrior SX-E500 is a 14-inch electric dirt bike designed for confident young riders who want more size, speed and capability than the smaller SX-E400.
Best for: riders aged around 4–7 and approximately 100–120cm tall who already balance confidently and want a proper electric motocross-style bike with room to progress.
RFN Warrior SX-E500 Electric Bike UK
The RFN Warrior SX-E500 electric bike sits in the middle of the RFN Warrior Kids range, positioned between the compact SX-E400 and the higher-performance SX-E700.
For many riders, this makes the SX-E500 the strongest all-round choice. It offers larger 14-inch wheels, front and rear disc brakes, proper suspension and three adjustable speed settings without immediately moving the rider onto the most powerful model in the range.
It is designed for children who have progressed beyond a lightweight electric balance bike and want something that feels much more like a genuine miniature motocross machine.
At Garland Powersports, we stock the RFN Warrior SX-E500 with fast UK delivery, specialist sizing advice and access to the full RFN Warrior Kids range.
What Is the RFN Warrior SX-E500?
The RFN Warrior SX-E500 is a children’s electric dirt bike designed to provide a proper motorcycle-style riding experience in a manageable youth-sized package.
It uses motocross-style bodywork, footrests, a twist throttle, front and rear suspension and 14-inch wheels rather than the bicycle-style design commonly found on electric balance bikes.
The SX-E500 is the middle model in the RFN Warrior Kids range. It provides more size and performance than the SX-E400 but remains less powerful and demanding than the SX-E700.
This makes it particularly suitable for growing riders who already understand basic balance, braking and throttle control.
Why Choose the RFN Warrior SX-E500?
The SX-E500 offers one of the best combinations of size, performance and progression in the RFN Warrior Kids range.
It has enough capability to remain exciting as the rider improves, while the adjustable speed settings allow parents to introduce the available performance gradually.
14-Inch Wheels
Larger wheels provide more stability and help the bike roll more easily across uneven ground.
Three Speed Settings
Parents can restrict the maximum speed and increase it as the rider becomes more confident.
Front and Rear Brakes
Separate disc brakes give the rider more control and introduce proper front and rear braking technique.
Removable Battery
The 36V lithium battery can be removed for convenient charging and storage.
Who Is the RFN Warrior SX-E500 For?
The RFN Warrior SX-E500 is generally recommended for riders aged around 4–7 years old and approximately 100–120cm tall.
These figures should be treated as guides. Rider confidence, inside leg measurement, strength and previous experience are equally important.
The SX-E500 is best suited to a child who already balances comfortably on two wheels and understands basic braking and throttle control.
It can work as a first electric dirt bike for a confident rider, but a smaller or more cautious child may be better suited to the SX-E400.
RFN Warrior SX-E500 rider guide
- Age guide: around 4–7 years
- Height guide: approximately 100–120cm
- Maximum rider weight: approximately 50kg
- Best rider type: confident beginner to developing rider
- Useful experience: balance bike, bicycle, SX-E400 or another smaller electric bike
- Best terrain: grass, dirt, fields and private off-road riding areas
- Next step: RFN Warrior SX-E700 MX
Is the SX-E500 suitable as a first electric bike?
Yes, provided the rider is confident and physically large enough to manage it.
The bike weighs approximately 19kg and reaches around 18.5mph in its highest setting, so it is more substantial than a traditional electric balance bike.
A confident rider can begin in the lowest setting and progress gradually. A nervous or smaller child may still find the SX-E400 easier to control.
RFN Warrior SX-E500 Key Specifications
| Specification | RFN Warrior SX-E500 |
|---|---|
| Motor | 36V 350W brushless electric motor |
| Rated output | 500W |
| Torque | Approximately 34Nm |
| Battery | 36V 5.2Ah removable lithium-ion battery |
| Battery capacity | 187Wh |
| Speed settings | Approximately 9.5mph, 13.5mph and 18.5mph |
| Maximum range | Up to approximately 11 miles in suitable conditions |
| Estimated Eco ride time | Around one hour in suitable conditions |
| Full charging time | Approximately 160 minutes |
| 80% charging time | Approximately 120 minutes |
| Brakes | 140mm front and rear disc brakes |
| Frame | Aluminium tube frame |
| Suspension | Front suspension and rear mono shock |
| Ground clearance | Approximately 175mm |
| Wheels | 14-inch front and rear wheels |
| Bike weight | Approximately 19kg |
| Maximum rider weight | Approximately 50kg |
Speed, range and riding time vary according to rider weight, speed setting, terrain, temperature and riding style.
Three Adjustable Speed Settings
The SX-E500 includes three selectable speed settings, allowing parents to control the available performance.
This helps the bike grow with the rider and reduces the need to provide full speed from the first session.
Performance That Grows With the Rider
- Lowest mode: approximately 9.5mph
- Middle mode: approximately 13.5mph
- Highest mode: approximately 18.5mph
The lowest mode is useful while the rider gets used to the bike’s size, throttle response and front and rear brakes.
The middle setting suits regular riding, while the highest mode should only be introduced once the rider has demonstrated consistent control.
Shop RFN Warrior SX-E500Motor Performance
The RFN Warrior SX-E500 uses a quiet 36V brushless electric motor with a rated output of 500W.
It delivers stronger performance than the SX-E400 while remaining easier to manage than the SX-E700.
The electric power delivery is smooth and predictable, making it suitable for riders who are still developing throttle control.
The SX-E500 offers enough performance for grass, dirt, light hills and private tracks without the noise or maintenance requirements of a small petrol dirt bike.
Battery, Range and Charging
The SX-E500 uses a removable 36V 5.2Ah lithium-ion battery.
The removable design means the battery can be charged indoors without moving the entire bike.
- 36V 5.2Ah lithium-ion battery
- 187Wh energy capacity
- Removable battery pack
- Up to approximately 11 miles of claimed range
- Around one hour of riding in Eco mode under suitable conditions
- Approximately 160 minutes for a full charge
- Approximately 120 minutes to reach 80%
Actual riding time will depend on terrain, rider weight, temperature, speed setting and throttle use.
Soft grass, hills and frequent full-throttle acceleration will reduce the available range compared with steady riding on firm, level ground.
Front and Rear Suspension
The SX-E500 is equipped with front suspension and a rear mono shock.
This allows the bike to absorb bumps more effectively than a rigid electric balance bike and gives the rider improved control across uneven surfaces.
The larger 14-inch wheels and approximately 175mm of ground clearance further improve its ability across grass, dirt and light off-road terrain.
The suspension is designed for recreational riding and developing riders rather than unrestricted jumping or competitive motocross use.
Front and Rear Disc Brakes
The SX-E500 uses 140mm front and rear disc brakes.
This is an important step up from the SX-E400, which uses a rear-only braking setup.
Separate front and rear braking allows riders to develop more advanced control and prepares them for larger motocross-style bikes in the future.
Before each ride, an adult should check both brakes and confirm that the rider can comfortably reach and operate the levers.
14-Inch Wheels and Off-Road Tyres
The SX-E500 uses 14-inch wheels at both ends, giving it a larger and more stable platform than the 12-inch SX-E400.
The bigger wheels help the bike roll more easily across bumps, rough grass and uneven ground.
They also provide a more substantial motocross-style riding position for growing riders.
The tyres are designed for private off-road use across surfaces such as grass, dirt, fields and light woodland trails.
Where Can the RFN Warrior SX-E500 Be Ridden?
The SX-E500 is intended for off-road use on private land and suitable designated riding areas with the landowner’s permission.
Suitable riding areas may include:
- Private gardens with sufficient space
- Grass fields
- Private paddocks
- Dirt tracks
- Light woodland trails
- Beginner motocross-style practice areas
The bike is not road legal and should not be used on public roads, pavements or cycle paths.
RFN Warrior SX-E400 vs SX-E500
The SX-E400 and SX-E500 share the same overall RFN Warrior design, but the SX-E500 is larger, faster and better equipped.
| Feature | SX-E400 | SX-E500 |
|---|---|---|
| Best For | Younger and smaller riders | Growing and more confident riders |
| Rated Output | 400W | 500W |
| Maximum Speed | Approximately 15.5mph | Approximately 18.5mph |
| Wheels | 12-inch | 14-inch |
| Brakes | Rear disc brake | Front and rear disc brakes |
| Best Rider Type | Younger first-time rider | Confident beginner or developing rider |
Choose the SX-E400 for a smaller rider who needs the most manageable RFN Warrior model.
Choose the SX-E500 for a rider who is physically larger, already balances confidently and would benefit from larger wheels and separate front and rear brakes.
Read our complete RFN Warrior SX-E400 vs SX-E500 comparison.
RFN Warrior SX-E500 vs SX-E700 MX
The SX-E700 sits above the SX-E500 and provides more peak power, a larger battery and hydraulic braking.
| Feature | SX-E500 | SX-E700 MX |
|---|---|---|
| Best For | Developing riders | Confident and experienced riders |
| Performance | 500W rated output | Up to approximately 700W peak power |
| Maximum Speed | Approximately 18.5mph | Approximately 21.5mph |
| Battery | 36V 5.2Ah | 36V 7.5Ah |
| Brakes | Mechanical disc brakes | Hydraulic disc brakes |
Choose the SX-E500 when manageable performance and progression are the main priorities.
Choose the SX-E700 MX when the rider is already confident and will benefit from more power, longer range and hydraulic brakes.
Read our full RFN Warrior SX-E500 vs SX-E700 MX comparison.
How Does the SX-E500 Compare With an Electric Balance Bike?
The SX-E500 provides a much more substantial riding experience than a traditional electric balance bike.
An electric balance bike is normally lighter and easier for a complete beginner to manage, while the SX-E500 uses footrests, suspension, disc brakes and a motocross-style chassis.
| Electric Balance Bike | RFN Warrior SX-E500 |
|---|---|
| Usually lighter and simpler | More substantial electric dirt-bike chassis |
| Bicycle-style seating position | Motorcycle-style position with footrests |
| Best for basic balance development | Best for throttle, braking and off-road progression |
| Often easier for complete beginners | Better for confident riders wanting a genuine dirt-bike feel |
Is the RFN Warrior SX-E500 Worth Buying?
The RFN Warrior SX-E500 is worth considering for a rider who has moved beyond a smaller electric balance bike and wants a proper electric dirt-bike experience.
Its strongest features are the 14-inch wheels, front and rear disc brakes, adjustable speed settings, suspension and removable battery.
It gives riders more room to progress than the SX-E400 without immediately requiring them to manage the additional performance of the SX-E700.
For a confident child around 100–120cm tall, the SX-E500 is often the strongest all-round model in the RFN Warrior Kids range.
Why Buy the SX-E500 From Garland Powersports?
Garland Powersports specialises in kids electric bikes and electric off-road machines rather than selling the SX-E500 as one product within a general toy range.
We can help compare the SX-E400, SX-E500 and SX-E700 based on the rider’s size, confidence and experience.
Specialist Advice
Clear advice comparing the SX-E500 with the smaller SX-E400 and higher-performance SX-E700.
UK Stock
RFN Warrior SX-E500 bikes available through our UK stock and warehouse network.
Fast UK Delivery
Fast delivery options when the selected SX-E500 model and colour are available.
Full RFN Range
Compare all three core RFN Warrior models before making your final decision.
Read our Best Place to Buy RFN Warrior SX-E500 UK guide for more information.
My Take as a British Motocross Rider
The SX-E500 is probably the model I would look at first for the largest number of riders in the RFN Warrior Kids range.
It feels much more like a proper mini motocross bike than a basic balance bike, but it is not as demanding as the SX-E700.
The larger 14-inch wheels and separate front and rear brakes make it a proper step forward from the SX-E400, while the three speed settings still give parents control over progression.
For a confident child who is already comfortable on two wheels, the SX-E500 is the sweet spot in the RFN Warrior range.
RFN Warrior SX-E500 FAQs
What age is the RFN Warrior SX-E500 for?
The SX-E500 is generally recommended for riders aged around 4–7 years old. Rider height, confidence and experience should also be considered.
What height rider is the SX-E500 for?
The usual rider height guide is approximately 100–120cm.
How fast does the SX-E500 go?
The SX-E500 has three speed settings of approximately 9.5mph, 13.5mph and 18.5mph.
Can parents restrict the speed?
Yes. Parents can select between three performance settings and increase the available speed as the rider becomes more confident.
How long does the SX-E500 battery last?
The SX-E500 has a claimed maximum range of approximately 11 miles and around one hour of riding in Eco mode under suitable conditions.
Is the battery removable?
Yes. The 36V 5.2Ah lithium-ion battery can be removed for charging and storage.
How long does the battery take to charge?
A full charge takes approximately 160 minutes, while an 80% charge takes around 120 minutes.
Does the SX-E500 have suspension?
Yes. It has front suspension and a rear mono shock.
Does the SX-E500 have front and rear brakes?
Yes. The SX-E500 uses 140mm front and rear disc brakes.
Is the SX-E500 suitable for beginners?
It can suit a confident beginner who already balances comfortably on two wheels. A smaller or more cautious child may be better suited to the SX-E400.
Should I buy the SX-E400 or SX-E500?
Choose the SX-E400 for a smaller and younger rider. Choose the SX-E500 for a taller or more confident rider who wants larger wheels and separate front and rear brakes.
Should I buy the SX-E500 or SX-E700?
Choose the SX-E500 for manageable all-round performance. Choose the SX-E700 for a confident rider who is ready for more power, range and hydraulic braking.
Is the SX-E500 road legal?
No. It is intended for private land and suitable off-road riding areas with the landowner’s permission.
Does the rider need protective equipment?
Yes. Riders should wear a correctly fitting helmet, gloves, suitable boots and protective clothing. Adult supervision is essential.
Do you offer UK delivery?
Yes. Garland Powersports offers fast UK delivery when the selected SX-E500 is in stock.
Explore the RFN Warrior Kids Range
Still deciding which model is suitable? Read our RFN Warrior Kids range explained guide.
RFN Warrior SX-E700
The premium performance model for riders ready for more power and hydraulic brakes.
Shop SX-E700Buy the RFN Warrior SX-E500 Electric Bike in the UK
The RFN Warrior SX-E500 is a strong all-round electric dirt bike for confident young riders who want a proper motocross-style machine.
It combines 14-inch wheels, three adjustable speed settings, front and rear suspension, separate disc brakes and a removable lithium battery in a package designed for riders around 100–120cm tall.
Shop the RFN Warrior SX-E500 electric bike online with Garland Powersports today.