How should I judge the real-world range of the Koolux X7?

The 25Ah capacity gives the X7 a larger energy reserve than most Koolux models, but the longest figure assumes favourable assistance and conditions. Higher motor output, hills, cold temperatures, low tyre pressure, frequent stops and rider or cargo weight can reduce distance substantially, so plan a reserve rather than riding to the claimed maximum.

How difficult is the Koolux X7 to store or lift?

The current manufacturer specification is about 43 kg and 177 × 70 × 122 cm when assembled. It needs ground-level bicycle storage and is unsuitable for frequent stair carrying; check door width and turning space as well as floor area.

Should I choose the Koolux X7 or the dual-battery X11?

Choose the X7 for one removable 25Ah pack, hydraulic brakes and a substantial long-distance fat-bike platform. Choose the X11 for two batteries totalling 23.4Ah and a folding frame that reduces storage space. The X11 is also much lighter at roughly 25.8 kg, although it is still not an easy daily carry.

Is the Koolux X7 Fat Tyre Elektrofahrrad easy to assemble?

The Koolux X7 Fat Tyre Elektrofahrrad 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 Koolux X7 Fat Tyre Elektrofahrrad water resistant?

The Koolux X7 Fat Tyre Elektrofahrrad 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.

Koolux X7 Fat Tyre Elektrofahrrad

Motor

750W

Battery

36V 12.5AH

Speed

25 KM/H

Range

87 KM

€1.540,95 €1.008,95

Sold out

Klarna €336,32 ×3

Clearpay €252,24 ×4

PayPal €336,32 ×3

Finance

From —/mo 24, 36 or 48 months at 15.9% APR 6 or 12 months at 0% interest

Shop Pay

From €84,08/mo 12 months at 0% interest Up to 24 months available

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Home Delivery Tracked options shown at checkout

Out of stock

This item is currently unavailable
Contact us for the latest restock estimate
We can recommend a suitable in-stock alternative

Click & Collect Collection from our Nuneaton workshop

Collect from our Nuneaton workshop

Collection is available by appointment from our Nuneaton workshop. The preparation time depends on where the product is currently stored. Contact us before ordering for the latest availability, or place your order and we will confirm when it is ready to collect.

Transfer required to Nuneaton Usually 5–7 working days

Products stored at another warehouse normally require 5–7 working days to reach our workshop. We will confirm as soon as the item is ready and arrange your collection appointment.

Best Price Guaranteed Found the same product for less?

Best Price Guaranteed

Seen the exact same product advertised for less? Send us the live offer before you order and we’ll check whether we can match it.

We consider genuine UK retailer offers for items that are in stock
The model, specification, colour, condition and delivery terms must be like-for-like
Marketplace or private sellers, used or clearance items, private codes, finance-only offers, bundle deals and obvious errors are excluded

Usually answered within 24 hours. Need a quicker answer? WhatsApp us or call 0800 099 6187.

Why Buy From TrailSurge? UK showroom, product support & aftercare

Buy your Koolux X7 Fat Tyre Elektrofahrrad with UK-based support

TrailSurge is a UK retailer with a showroom and workshop in Nuneaton. Our team can help before you order and continue supporting you after your Koolux X7 Fat Tyre Elektrofahrrad arrives.

UK-based customer support before and after your purchase
Showroom and workshop in Nuneaton
Help with product questions, setup, parts and aftercare
Tracked UK delivery with support if you need help with your order
Speak to a real member of our team before placing your order

Why buy through TrailSurge? For the best UK-based support and aftercare, we recommend buying through TrailSurge rather than ordering directly from overseas manufacturers or China-based sellers, where returns, warranty support and parts handling can be more difficult.

Need help with the Koolux X7 Fat Tyre Elektrofahrrad? Ask our team a question before ordering.

WhatsApp Us Call Us 0800 099 6187

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 .

Check your fit

Size & Rider Fit

Seat Height: 80–105 cm
Maximum Rider Weight: 150KG

Good to know 20 in fat-tyre frame with a broad 80–105 cm saddle adjustment range.

Trail Surge Warranty Plus FULL OFFICIAL WARRANTY INCLUDED UK-based support alongside the manufacturer warranty TRAILSURGE COVER 12 months

TWO LAYERS OF PROTECTION

More confidence after you buy

TrailSurge Warranty+ gives you a direct UK warranty alongside the product’s manufacturer warranty.

01 TRAILSURGE WARRANTY +

12 months of TrailSurge support

UK-based fault support
Battery, motor and frame fully covered.
Repair, parts or another suitable solution where eligible

02 Koolux WARRANTY

Manufacturer warranty period 12 months against manufacturing defects.

Manufacturer cover

Confirmed production faults affecting the original frame and factory-installed electrical or mechanical components.

Typical component protection Eligible faults affecting the frame and forks, motor and drive system, controller, battery and BMS, charger, wiring, display, gears, brakes and factory-fitted controls.

Description

Kurze Zusammenfassung
Das KOOLUX X7 ist ein robustes, faltbares E-Bike für ambitionierte Fahrer. Mit einem leistungsstarken 48-V-Akku mit 25 Ah, fetten Reifen und hydraulischen Bremsen bietet es Langstreckenfahrten im flexiblen Gelände mit Vertrauen und Komfort.

Leistung und Reichweite
Wählen Sie zwischen einer zugelassenen 250-Watt-Version oder einer freigeschalteten 750-Watt-Version, je nach Ihren Fahrvorlieben. Der große Akku ermöglicht lange Fahrten zwischen den Ladevorgängen.

Gebaut für jedes Terrain
Die 20″-Fettreifen und die Vorderradaufhängung sorgen für Stabilität und Komfort auf unebenem Gelände, während die hydraulischen Scheibenbremsen für zuverlässige Bremskraft sorgen.

Intelligentes und praktisches Design
Das Fahrrad lässt sich leicht zusammenklappen und verstauen, wenn es nicht gebraucht wird. Der abnehmbare Akku ermöglicht flexible Ladeplätze, und die Gesamtkonstruktion trägt bis zu 120 kg Fahrergewicht.

Zuverlässige Eigenschaften
Der IP54-zertifizierte Rahmen schützt vor Wasserspritzern. Der stabile Rahmen und die hydraulischen Bremsen tragen zur Langlebigkeit des Fahrrads und zu einem sicheren, kontrollierten Fahrgefühl bei.

Specifications

Collection	Cargo & Lieferung Elektrofahrräder
Brand	Koolux
Bike Type	Fat Tyre, Delivery & Cargo
Motor Power	750W
Battery	36V 12.5AH
Top Speed	15.5 MPH
Acceleration Method	Regular Pedalling + Pedal Assist + Throttle Acceleration
Max Range	54 Miles
Charging Time	7+ Hours

Shock Absorbers	Front
Wheel Size	20inch x 4.0 Fat Tyre
Brakes	Dual Mechanical Disc Brakes
Gears	7 Speed Shimano Gears
Bike Weight	27KG
Max Climb	15 degrees
Max Rider Weight	150KG
Dimensions
Built Dimensions	177 × 70 × 122 cm (L × W × H)
Box Dimensions	145 × 28 × 79 cm (L × W × H)