Amped A18 Comp vs A20 Comp

Amped A18 Comp vs A20 Comp: Which Electric Bike Should You Choose?

Quick answer: The Amped A18 Comp is the better choice for younger or smaller riders who want a serious full suspension Comp bike in a more manageable size.

The Amped A20 Comp is the better option for taller, more confident riders who want extra power, extra stability and more room to grow.

Shop Amped A18 Comp Shop Amped A20 Comp View Amped Range

If you are comparing the Amped A18 Comp vs Amped A20 Comp, the main difference is rider size. Both bikes sit in the premium Amped Comp range, but the A18 Comp is the smaller and more manageable option, while the A20 Comp gives taller riders more power, more stability and more long-term room to grow.

This comparison is especially useful if your child is moving up from bikes such as the Amped A16 Pro, Amped A20 Pro, Revvi 16 Plus, Revvi 18 or Revvi 20 and you are trying to decide which Amped Comp model is the right next step.

Amped A18 Comp vs A20 Comp Comparison Table

Feature	Amped A18 Comp	Amped A20 Comp
Wheel Size	18 inch	20 inch
Motor Output	800W peak	1200W peak
Battery	36V system	36V system
Top Speed	Up to around 25mph	Up to around 28mph
Rider Height Guide	Approx. 120-150cm	Approx. 130-160cm
Best For	Younger riders stepping into the Comp range	Taller riders wanting more room to grow

Choose the Amped A18 Comp If You Want the Most Manageable Comp Bike

The Amped A18 Comp is the smaller and more confidence-inspiring option in this comparison. It still gives riders the premium Comp feel, including full suspension, hydraulic brakes, off-road tyres and strong power, but in a size that is easier for younger riders to handle.

This makes it a great choice for riders who are ready to progress beyond smaller electric balance bikes but are not quite big enough for a full 20 inch Comp bike.

Amped A18 Comp is best if:

The rider is around 120-150cm tall
You want the easiest Comp model to manage
The rider is moving up from a Revvi 16, Revvi 18 or Amped A16 Pro
You want serious performance without going too large
The rider is confident, but still needs a bike that feels controlled

The A18 Comp is ideal when the rider wants a proper performance electric bike but still needs something that feels natural, balanced and manageable underneath them.

View the Amped A18 Comp here.

Choose the Amped A20 Comp If You Want More Size, Power and Stability

The Amped A20 Comp is the larger and more powerful option. With 20 inch wheels, a bigger chassis and 1200W peak output, it is better suited to taller riders who are ready for more bike underneath them.

It is also the better long-term option if the rider is already close to outgrowing an 18 inch bike or is growing quickly.

Amped A20 Comp is best if:

The rider is around 130-160cm tall
You want more room to grow
The rider is already confident on faster electric bikes
You want the stronger 1200W peak power option
You want more stability from the larger 20 inch platform

The A20 Comp is the smarter choice if the rider is already tall enough for it. It gives more stability at speed and should last longer before the rider feels physically cramped.

View the Amped A20 Comp here.

Which Bike Is Faster?

The Amped A20 Comp is the faster and more powerful bike on paper. It has a stronger peak power output and a larger 20 inch platform, which makes it better suited to taller and more confident riders.

Amped A18 Comp: 800W peak power
Amped A20 Comp: 1200W peak power

For smaller riders, the A18 Comp can still feel quick and exciting because it fits them better. For taller riders, the A20 Comp will usually feel more stable, more capable and more suitable long term.

Which Bike Is Better for Rider Size?

Rider height is the key deciding factor between these two bikes.

Simple sizing guide:

Choose A18 Comp: if the rider is roughly 120-150cm tall and you want the most manageable Comp model.

Choose A20 Comp: if the rider is roughly 130-160cm tall and you want more size, stability and long-term room to grow.

If the rider is right in the middle, around 130-145cm, the decision comes down to confidence and experience. A more cautious rider may be better on the A18 Comp, while a taller and more confident rider may benefit from going straight to the A20 Comp.

A18 Comp or A20 Comp: Which One Should You Buy?

For riders who are still smaller, younger or newer to high-performance electric bikes, the Amped A18 Comp is usually the better choice. It still has serious performance, but the smaller size makes it easier to control.

For riders who are already taller, stronger and more confident, the Amped A20 Comp is usually the better long-term purchase. It gives more room to grow and a bigger, more stable platform.

Garland Powersports Verdict

If the rider is around 120-140cm tall, we would usually recommend the Amped A18 Comp. It gives the full Comp experience in a more manageable size.

If the rider is closer to 145-160cm or growing quickly, the Amped A20 Comp is normally the smarter long-term choice.

FAQ: Amped A18 Comp vs A20 Comp

What is the main difference between the Amped A18 Comp and A20 Comp?

The main difference is size and power. The A18 Comp is smaller and easier to manage, while the A20 Comp is larger, more powerful and better suited to taller riders.

Is the Amped A20 Comp better than the A18 Comp?

The A20 Comp is bigger and more powerful, but it is not automatically better for every rider. The A18 Comp can be the better choice for smaller or younger riders because it is easier to control.

Who should buy the Amped A18 Comp?

The A18 Comp is best for riders around 120-150cm tall who are ready for a serious full suspension electric bike but still need manageable sizing.

Who should buy the Amped A20 Comp?

The A20 Comp is best for riders around 130-160cm tall who want more power, more stability and more room to grow.

Is the Amped A18 Comp good as a first performance electric bike?

Yes. The A18 Comp is a strong option for riders moving into the premium Amped Comp range, especially if they are not yet ready for the larger A20 Comp.

Which bike offers better long-term value?

The A20 Comp can offer better long-term value for taller riders because they are less likely to outgrow it quickly. For smaller riders, the A18 Comp is better value because it will fit properly from the start.

Shop Amped Comp Electric Bikes

Amped A18 Comp

Best for younger or smaller riders stepping into the premium Amped Comp range.

Shop A18 Comp

Amped A20 Comp

Best for taller, more confident riders who want more power, stability and room to grow.

Shop A20 Comp

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Why Buy from Garland Powersports?

Garland Powersports is a UK specialist in kids electric bikes, electric balance bikes, pit bikes and youth off-road machines. We stock leading brands including Amped, Revvi, STACYC, RFN, EBOX, Kayo, Stomp and 10Ten.

Need help choosing between the Amped A18 Comp and A20 Comp? Contact us and we can help match the right bike to the rider’s height, age, experience and confidence level.