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SkintSTUFF · 25 Oct 2026 · 1 min read

Is your e-bike conversion kit actually legal in the UK?

By the Skint Kit crew · How we pick

Most e-bike conversion kits sold online are not road legal in the UK. Here's the quick test.

The motor's continuous rated power has to be two hundred and fifty watts or less. The motor has to stop helping at fifteen and a half miles an hour.

And no throttle that moves the bike without you pedalling, unless the bike is approved. You also need to be fourteen or over.

Fail any one of those and the law treats it as a moped. That means registration, tax, a licence, insurance and a motorbike helmet, and the police can seize it.

The government dropped plans for five hundred watt bikes, so nothing has changed. Check your kit in ten seconds with the free checker linked below.

Is your e-bike conversion kit actually legal in the UK?
Photo: Matti Blume, CC BY-SA 4.0. Credits

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UK-legal e-bike kit picker →

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