How small does the D3F actually get when it is folded?

The D3F is better described as compact or semi-folding than suitcase-small. DYU lists a folded size of about 117 × 20 × 72cm, so the bike becomes much narrower but keeps most of its original length.That works well for a car boot, hallway, office or camper, but it is not a tiny package you would want to carry around a station for long periods.

Does the D3F have app control, or is it a simple stand-alone bike?

DYU's current comparison information lists no phone app for the D3F. It is intentionally simple, although the current UK model does include a cruise function for steady-speed riding.

What range should I realistically plan around on the D3F?

DYU's current UK specification lists up to around 50km in pedal-assist use and around 40km using throttle mode. Those are maximum test figures, not a guaranteed everyday distance.Rider weight, cold weather, hills, stop-start riding and higher assistance all reduce range, so leave a useful reserve rather than planning a journey around the final kilometre of the claim.

Is the DYU D3F 250W 14" Klappbares Elektrofahrrad easy to assemble?

The DYU D3F 250W 14" Klappbares 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 DYU D3F 250W 14" Klappbares Elektrofahrrad water resistant?

The DYU D3F 250W 14" Klappbares 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.

DYU D3F 250W 14” Folding Electric Bike 250W 36V 10Ah

DYU D3F 250W 14" Klappbares Elektrofahrrad

Motor

250W

Battery

36V 7.5AH

Speed

25 KM/H

Range

60 KM

€712,95 €426,95

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Clearpay €106,74 ×4

PayPal €142,32 ×3

Finance

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

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From €35,58/mo 12 months at 0% interest Up to 24 months available

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Out of stock

This item is currently unavailable
Contact us for the latest restock estimate
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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.

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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.

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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 DYU D3F 250W 14" Klappbares 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 DYU D3F 250W 14" Klappbares 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 DYU D3F 250W 14" Klappbares Elektrofahrrad? Ask our team a question before ordering.

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Check your fit

Size & Rider Fit

Seat Height: Minimum 26.9 in (68 cm)
Maximum Rider Weight: 120KG
Handlebar height: 38.5 in (98 cm)

Good to know Compact 14 in mini e-bike frame. Contact us with your height and inside leg for a fit check.

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 DYU WARRANTY

Manufacturer warranty period 12 months for the original owner on the frame, battery and factory-fitted components.

Manufacturer cover

Manufacturing defects and confirmed transit damage. Eligible frame faults may qualify for a replacement frame, while batteries may be repaired or replaced following assessment.

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

Schnell durch die Stadt

Der leise 250-Watt-Motor des D3F sorgt für eine sanfte Beschleunigung, sobald Sie den Gashebel betätigen oder eine der drei Pedalunterstützungsstufen wählen. Perfekt für schnelle Besorgungen oder um sich durch den Verkehr zu schlängeln - es fühlt sich fast wie eine Fahrt auf Luft an.

Leistung im Taschenformat

Trotz der zierlichen 14″-Räder und des minimalistischen Rahmens verbirgt das D3F einen 36-V-Akku mit 7,8 Ah, der zum Aufladen in weniger als 4 Stunden herausgezogen werden kann. Mit einer vollen Ladung können Sie im reinen Elektromodus bis zu 40 km zurücklegen - mit ein wenig Pedalkraft sogar bis zu 60 km.

Komfort in einem kleinen Paket

Robuste, pannensichere Reifen und ein gefederter Sattel fangen Stöße ab, die man auf einem so kleinen Fahrrad nicht erwartet. Ihre Gelenke - und Ihr Morgenkaffee - danken es Ihnen, wenn Sie ohne Ruck über Risse, Kopfsteinpflaster oder Bodenwellen fahren.

Blitzschnell zusammengeklappt

Mit einem Schnellverschluss am Vorbau und am Rahmenscharnier lässt sich das D3F auf eine Fläche zusammenklappen, die klein genug ist, um in Bushaltestellen, Zügen und Büros Platz zu finden. Mit nur 18 kg ist er leicht genug, um ihn die Treppe hinaufzutragen oder unter dem Schreibtisch zu verstauen.

Sicherheit, auf die man sich verlassen kann

LEDs vorne und hinten sorgen dafür, dass Sie auch in der Dämmerung gut sichtbar sind, und mechanische Scheibenbremsen sorgen für eine zuverlässige Bremsleistung bei Regen und Sonnenschein. Reflektierende Akzente rund um den Rahmen geben Ihnen bei schlechten Lichtverhältnissen einen zusätzlichen Vorteil.

Specifications

Collection	DYU Elektrofahrräder
Brand	DYU
Bike Type	City & Commuter, Folding
Motor Power	250W
Battery	36V 7.5Ah
Top Speed	15.5 MPH
Acceleration Method	Regular Pedalling + Pedal Assist + Throttle Acceleration
Max Range	37 Miles
Charging Time	5+ Hours

Wheel Size	14inch
Brakes	Dual Mechanical Disc Brakes
Gears	No Gears
Bike Weight	20KG
Max Climb	15 degrees
Max Rider Weight	120KG
Dimensions
Built Dimensions	117 × 50 × 99 cm (L × W × H)
Box Dimensions	119.5 × 23 × 61 cm (L × W × H)

A close-up view of a bike wheel with a 250W powerful brushless motor, showing an exploded diagram of the motor components in front of the wheel. Text reads: “250W Powerful Brushless Motor.”.

Whisper‑Quiet Burst of Power from a 250 W Brushless Motor

Feel the surge of smooth, efficient acceleration as the DYU D3f’s advanced 250 W hub motor delivers instant torque—hitting a regulated 25 km/h top speed without rattling your ride. Sealed for durability and tuned for maximum range, it’ll carry you up hills and through traffic with effortless confidence.

Close-up images of the front and rear wheels of a bicycle, highlighting the dual disc brake system. Text reads: Front & Rear Dual Disc Brakes. Efficient Braking, Safe Riding.

Lightning‑Fast Stopping with Front & Rear Dual Disc Brakes

Ride with total peace of mind thanks to precision‑engineered disc rotors on both wheels. High‑sensitivity calipers bite instantly in all weather conditions, giving you razor‑sharp modulation and the shortest stopping distances—perfect for urban commutes and crowded streets.

A collage showcases close-up shots of a black DYU electric bicycle, highlighting the headlight, seat, handlebar, front wheel with disc brake, frame with branding, and the rear wheel motor.

Everything You Need—Integrated Smart Components for Ultimate Convenience

From the bright LED headlight and spring‑loaded comfort saddle to the tactile bell and easy‑reach throttle, the D3f packs essential features seamlessly into its compact chassis. A built‑in rear fender keeps you dry, while the discreet carry handle doubles as a battery hatch for grab‑and‑go recharging.