2026 UK Buying Guide
Best 18 Inch Electric Bike for Kids UK
Compare the Revvi 18 and Amped A18 Comp by rider size, motor, top speed, suspension, brakes and value.
Quick answer: choose the Revvi 18 for all-round value and manageable progression. Choose the Amped A18 Comp for stronger performance and premium off-road equipment.
Best Value All-Rounder
Revvi 18
500W, up to 20mph and full suspension for riders progressing from smaller bikes.
Best Premium Performance
Amped A18 Comp
800W rated, 1000W peak and up to 25mph with premium suspension and hydraulic brakes.
British Motocross Rider Perspective
My View on 18-Inch Electric Bikes
The main difference is not simply 5mph. The Amped A18 Comp has a more serious chassis, suspension and braking package for confident riders pushing harder off-road.
For general progression and value, I would choose the Revvi 18. If the rider already has good control and will use the extra capability, I would choose the A18 Comp.
Side-by-Side Comparison
Revvi 18 vs Amped A18 Comp
Age is only a guide. Height, inside leg, strength, confidence and experience should decide the final fit.
| Feature | Revvi 18 | Amped A18 Comp |
|---|---|---|
| Best For | All-round progression and value | Confident performance riders |
| Rider Guide | Approx. 8–12 years Approx. 130–155cm |
Approx. 7–13 years Approx. 120–150cm |
| Motor & Top Speed |
36V 500W Up to 20mph |
36V 800W / 1000W peak Up to 25mph |
| Battery | 36V 5Ah lithium | 36V 10Ah lithium |
| Suspension | Front and rear suspension | Hydraulic forks and FASTACE rear air shock |
| Our Verdict | The easier value-led recommendation | The higher-spec off-road choice |
Rider Suitability
Who Is an 18-Inch Electric Bike For?
A step up from smaller 16-inch bikes for riders who need more room.
The rider should understand balance, braking and throttle release.
For suitable private land with the landowner's permission.
Do not choose extra power as a substitute for correct sizing.
Best Value All-Rounder
1. Revvi 18
The Revvi 18 gives growing riders more size and capability without moving into the most aggressive performance category.
Best for: progressing riders around 130–155cm who value manageable power and overall value.
- 36V 500W brushless hub motor
- Up to 20mph
- 36V 5Ah lithium battery
- Front and rear suspension
- Hydraulic disc brakes
My view: choose the Revvi 18 when the rider needs a capable progression bike but not the A18 Comp's extra speed and premium suspension.
Shop Revvi 18Best Premium Performance
2. Amped A18 Comp
The A18 Comp is the more serious option, combining higher output with a premium chassis, suspension and braking package.
Best for: confident riders around 120–150cm who will genuinely use the additional capability.
- 36V 800W brushless motor with 1000W peak
- 7.5, 17.5 and 25mph modes
- 36V 10Ah battery
- Hydraulic forks and FASTACE rear air shock
- Front and rear XOD hydraulic brakes
My view: choose it when the rider is already capable, rides harder off-road and will benefit from the stronger equipment.
Shop Amped A18 Comp
Safe Off-Road Riding
Start in the Lowest Suitable Mode
Use a correctly fitting helmet and suitable protective equipment, supervise young riders closely and begin in a flat open area away from vehicles and obstacles.
Neither bike is road legal. Use only on suitable private land with permission.
Frequently Asked Questions
18-Inch Electric Bike FAQs
Which is best overall?
Revvi 18 for value and general progression; A18 Comp for premium performance.
How fast do they go?
Up to 20mph for the Revvi 18 and up to 25mph for the A18 Comp.
Which has the stronger specification?
The A18 Comp, with 1000W peak power, a 10Ah battery and premium suspension.
Are they road legal?
No. Both are for recreational off-road use on suitable private land with permission.
Related Guides
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Choose the bike that best matches the rider's size, control and experience.