Aairsk SU7 250W Electric Bike - 24 Inch

The Aairsk SU7 is a compact 24-inch electric bike with a 250W motor, 36V 13Ah battery, front suspension and Shimano 7-speed gearing. £499 with free UK delivery.

Held in UK stock, so there's no import wait and no customs charge when it arrives — typically 3–5 working days, often faster.

How fast does it go?

Assistance cuts out at 25km/h (15.5mph), the UK legal limit for an electrically assisted pedal cycle. You can pedal faster under your own effort; the motor simply stops helping past that speed.

How far will it go on a charge?

The 36V 13Ah battery gives an estimated 30–40km (19–25 miles) on throttle alone, or 40–60km (25–37 miles) with pedal assist. Pedalling alongside the motor makes a real difference to how far you get.

Hills, cold weather, tyre pressure and rider weight all reduce range, so plan against the lower figure. A full charge takes around 5–6 hours.

How long will the battery last?

Expect several hundred full charge cycles — typically around 500–800 for a lithium-ion pack — before capacity noticeably drops, which is several years for most riders.

Avoid leaving it flat or sitting at 100% for weeks, and charge it indoors rather than in a freezing shed.

Why 24-inch wheels?

This is the SU7's main point of difference. Smaller wheels lower the standover height and make the bike easier to handle and store, which suits shorter riders or anyone keeping a bike in a hallway or small flat. The trade-off is slightly less roll-over ability on rough ground compared with a 26-inch wheel.

If you want a full-size wheel instead, look at the GT300 or Q7.

Is it road legal in the UK?

The SU7 is built to the 250W EAPC specification with a 25km/h cut-off, which is what UK law requires for public roads and cycle paths without registration, tax, insurance or a licence.

It's supplied with a twist throttle, and throttle operation is where legality depends on the delivered configuration. Check the current GOV.UK EAPC rules before riding on public roads.

Specifications

Range figures are supplier estimates rather than guarantees.

Delivery and returns

• Free UK mainland delivery from UK stock — typically 3–5 working days, often faster.
• 12-month warranty.
• 14-day right to cancel under the Consumer Contracts Regulations 2013, plus your full rights under the Consumer Rights Act 2015.
• Sold by Horizon and Co Solutions Ltd, a UK registered company (No. 16942003, England and Wales).

Compare before you buy

Browse all road-legal 250W electric bikes or read the complete e-bike buyer's guide.