What makes the Aairsk X5 Electric Bike different from a full-size commuter e-bike?

The Aairsk X5 Electric Bike combines compact 20-inch wheels with 4-inch fat tyres, an extended rear seat and a 48V 15Ah battery. It feels more planted and cargo-oriented than a narrow-tyre city bike, but its wide tyres add rolling resistance and bulk. The frame does not become a lightweight folder simply because the wheels are small.

Can the Aairsk X5 Electric Bike battery be removed for indoor charging?

Yes. The current Aairsk specification describes a removable 48V 15Ah battery, allowing the bike to stay in storage while the pack charges indoors. Support it during removal, use only the supplied compatible charger and lock it fully back into the frame. Real charging time and range depend on the exact supplied charger and assistance used.

Does the Aairsk X5 Electric Bike use Shimano gears or electronic riding modes?

Current manufacturer information describes a three-speed electronic shifting or assistance system, while some older titles refer to Shimano gearing. Treat these as different functions and confirm the controls fitted to the TrailSurge unit before ordering. The product received should match the current order specification and manual.

Can the Aairsk X5 Electric Bike carry cargo or a passenger?

The X5 has an extended rear seat and rack-style structure, but the rider, any passenger, cargo, battery and accessories must remain within the bike's stated 200 kg maximum. Confirm the manual's passenger seating and foot-support requirements, and do not assume the rear section can take the entire total. Extra load reduces range and increases braking distance.

Is the Aairsk X5 Electric Bike easy to assemble?

The Aairsk X5 Electric Bike arrives mostly assembled. Final setup normally includes aligning and securing the handlebars, fitting the pedals and completing essential safety checks. Allow approximately 20–30 minutes, or select our professional assembly and PDI service.

Is the Aairsk X5 Electric Bike water resistant?

The Aairsk X5 Electric Bike is not fully waterproof. Avoid prolonged exposure to heavy rain, and never submerge or pressure wash the bike or its electrical components. After riding in wet conditions, wipe the bike dry and store it in a dry, sheltered location.

AUTUMN SALE

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Aairsk X5(20 INCH Electric Bike - Black & Brown

Certified

Aairsk X5 Electric Bike

SKU: AAR-X5-20-INCH-BLACKANDBROWN

Motor

500W

Battery

48V 15AH

Speed

28 MPH

Range

50 MILES

£999.00 £799.00

Sold out

Klarna£266.33 ×3

Clearpay£199.75 ×4

PayPal£266.33 ×3

Monthly finance Rates at checkout

Payment options and eligibility are subject to approval and confirmed at checkout.

Product variants:

Rated Excellent on Trustpilot

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Click & Collect Choose your collection date

TrailSurge Nuneaton · Unit 62 Centenary Business Centre, Nuneaton, CV11 6RY Monday–Friday · 10am–4pm

Preferred collection date

Available from — · 7 working days ahead

Select Pickup · TrailSurge Nuneaton at checkout. We'll confirm when your order is ready; dates are requested, not guaranteed.

Returns & Cancellations 14-day cancellation · 30-day unopened returns

Change of mind Within 14 days of delivery

Unused, unopened items Up to 30 days

Policy conditions and return costs may apply. Your statutory rights are unaffected.

Read returns policy

Road use notice: This bike is over 250W and is for private land/off-road use only. Need a UK road-compliant option? View road legal e-bikes .

Included with your purchase

TrailSurge Warranty+

12 monthsof cover

UK-based warranty and after-sales support

What’s covered

Frame & forks · Motor & controller · Battery & charger · Factory-fitted electrics & mechanical parts

Here when you need us

Fault assessment, warranty guidance and help arranging eligible repairs or replacement parts.

Need to make a claim?

Contact our UK team with your order number and a few photos.

View warranty detailsHide warranty details

Cover & exclusions

Normal wear, accidental damage, misuse and unauthorised modifications are excluded. Eligibility and remedies are subject to the full warranty terms.

Need to make a claim?

Contact TrailSurge with your order number, a description of the fault and clear photos or a video. Our team will assess the issue and explain the next steps.

Aairsk manufacturer warranty

Manufacturer warranty period

2 years on the motor and controller; 1 year on the battery.

Manufacturer cover

Non-accidental manufacturing faults affecting those original components during their stated periods.

Separate manufacturer terms apply. Warranty periods are not added together.

View warranty details Hide warranty details

What’s covered

Frame & forks · Motor & controller · Battery & charger · Factory-fitted electrics & mechanical parts

Here when you need us

Fault assessment, warranty guidance and help arranging eligible repairs or replacement parts.

Need to make a claim?

Contact our UK team with your order number and a few photos.

Cover & exclusions

Normal wear, accidental damage, misuse and unauthorised modifications are excluded. Eligibility and remedies are subject to the full warranty terms.

Need to make a claim?

Contact TrailSurge with your order number, a description of the fault and clear photos or a video. Our team will assess the issue and explain the next steps.

Aairsk manufacturer warranty

Manufacturer warranty period

2 years on the motor and controller; 1 year on the battery.

Manufacturer cover

Non-accidental manufacturing faults affecting those original components during their stated periods.

Separate manufacturer terms apply. Warranty periods are not added together.

Description

The Aairsk X5 electric bike stands out with its distinctive 20-inch styling, chunky tyres and relaxed riding feel. Its compact-wheel design brings personality to leisure cycling, backed by a substantial 48V 15Ah battery and convenient electric features.

Key Features

Distinctive 20-inch design with a bold, compact-wheel profile.
48V 15Ah battery providing 720Wh of nominal capacity.
Kenda tyres for cushioning on suitable mixed surfaces.
Shimano gearing to help manage your pedalling effort.
NFC keyless activation for easy electrical start-up.

A Different Kind of Electric Bike

The X5's chunky proportions offer a distinctive alternative to a conventional mountain or city e-bike. Its comfortable layout and wider tyres make it appealing for relaxed recreational journeys and exploring suitable tracks.

Battery Capacity for Leisure Adventures

With a 720Wh battery, the X5 offers generous stored energy for electric assistance. Real-world distance will depend on terrain, rider weight and assistance level, while Shimano gearing lets you adapt your effort along the way. It's an eye-catching 20-inch electric bike with useful everyday controls.