DYU SP1 Removable Power Bank Folding Electric Bike

Metro · ICE · Eurostar · Fly-On Ready

No Extra Bike Ticket Required.

The SP1 folds to just 80 cm — within every major European rail network’s free carry-on limit — so you can board any metro, train, or plane across Europe without an extra bike ticket. Folding bikes ride free on Deutsche Bahn (U-Bahn, S-Bahn, ICE), Eurostar (London–Paris–Brussels), NS Dutch Rail (all day, no reservation), SNCF French Rail, Trenitalia, and National Rail UK. At 120Wh, the battery is below the IATA 160Wh aviation limit — declare it at check-in and bring it on as carry-on. One bike, the whole continent.

Deutsche Bahn ICE: folded bikes permitted in designated luggage spaces, no bike reservation fee. Eurostar: folded bikes treated as standard luggage — no bike supplement, no pre-booking required. NS (Netherlands): folded bikes free all day (max 45×86×80 cm), no Fietskaart needed. SNCF (France): folded bikes free as luggage (max 90×130×50 cm when folded). Trenitalia (Italy): one folded bike per passenger, free on all regional trains. National Rail (UK): folded bikes free on all trains, no reservation needed. IATA aviation: battery must be declared at check-in; carry-on only, not checked baggage.

1-Click Detachable LG Powerbank Battery

The Battery That Sets You Free.

The 24V 5Ah LG 21700 battery pack detaches in seconds. Take it home or to the office to recharge — no need to bring the whole bike inside. Use it as a standalone power bank equivalent to 6–7 standard power banks. It also charges your phone via USB while you ride. And when the battery is off, the SP1 rides like any regular bicycle — no motor drag, no dead weight.

3D-Forged Aluminium Frame

Built to Last a Lifetime.

Aircraft-grade 6061 aluminium, 3D forged in a single piece — no welding seams, no stress concentration points. Lighter and stronger than conventional welded frames at just 14 kg total.

Fold in 3 Seconds. Go Anywhere.

Magnetic Fold Lock

Fold the SP1 in seconds. Integrated magnetic clips lock both wheels together so you can carry the bike single-handed by the handlebar — no awkward balancing act.

AI Torque Sensor

Feels Like Natural Pedalling.

Unlike basic cadence sensors that just detect pedalling, the SP1’s torque sensor measures actual pedal force 1,000× per second and delivers proportional motor assistance — smooth, intuitive, and energy-efficient. Pedal manually for exercise or activate the 250W motor for effortless electric assist. Switch modes instantly, ride your way.

Half-Fold Roll Mode

One Hand Free. Zero Effort.

Fold the frame in half and roll the SP1 by the handlebar — wheels stay on the ground. Walk it through metro stations, lift it into elevators, or manoeuvre through crowded platforms without carrying the full weight. One hand free, zero effort.

Full 3-Fold Compact Mode

Smaller than a carry-on. Slides under your desk, stands in a corner.

Fold the handlebar down for a third fold — the SP1 collapses to just 80 × 72 cm. Fits under a desk, beside a café chair, or inside a 26″ checked suitcase. The most compact folding position for home storage, car boots, or overnight stays.