NDakter Heavy-Duty U-Lock for E-Bikes & Bikes — Large 4-Digit Resettable Combo with 5ft Steel Cable, Hardened 14.6mm Shackle

NDakter Heavy Duty Anti-Theft U-Lock with a 4-digit resettable combination and a 5-foot steel cable secures e-bikes, scooters, bicycles and more without keys.

Built for riders who want a balance of portability and robust protection, this NDakter lock pairs a large U-shaped hardened-steel shackle with a flexible steel cable to fasten frames and wheels to immovable fixtures. The head uses a zinc-alloy housing and a smooth four-digit dial you can reprogram, so you avoid carrying keys while keeping theft resistance high. Its thoughtful proportions provide extra internal space so you can lock bulkier e-bike frames or loop through multiple components.

How does this lock keep my electric bike safer in public?

The combination of a thick alloy U-shackle and an additional braided steel cable offers two layers of defense: a rigid barrier against leverage and cutting tools and a flexible cable to include wheels and accessories. The shackle's protective coating also prevents paint damage while maintaining strength.

• 14.6 mm hardened alloy shackle resists common cutting attacks
• Zinc-alloy locking head adds structural durability
• Coating on the shackle prevents frame scratches
• 5 ft steel cable lets you secure front and rear wheels or helmets

Is the 4-digit combination easy to set and use?

Yes — the lock ships with a preset code and a simple reset process that lets you choose a new four-digit code without a key. The dials turn smoothly, and the mechanism is designed for daily use so you can quickly lock and unlock while on the go.

• Initial code provided; changeable by turning the reset disk 90°
• No keys to lose or fumble with during commutes
• Recommended to record your chosen code for backup
• Smooth operation for repeated everyday locking

Will this lock fit larger frames and multiple components?

The U-lock offers a larger-than-average internal space to accommodate bulkier e-bike frames and to loop through racks, poles and wheels. Paired with the 5-foot cable, it gives you room to secure more than just the frame, adding flexibility when parking in tight or irregular spaces.

• Interior lock opening: approximately 7.5" x 4.5" for larger fit
• Exterior size: roughly 9.8" x 7" for strong leverage resistance
• Cable can be threaded through both wheels and accessories
• Great for e-bikes, scooters, motorcycles, gates and doors

How portable is the NDakter lock for everyday use?

Designed with riders in mind, the lock balances weight and security: heavy enough to deter opportunistic thieves but light enough to carry on commutes or stowed on a rack. Its compact U shape and flexible cable tuck away neatly when you’re riding.

• Total combined weight about 2.82 lbs for solid deterrence
• Shackle thickness 0.57 in for heavy-duty performance
• Cable and lock store together for convenient transport
• Shackle coating avoids scuffing your paintwork

Who is this for? Riders of electric bikes, mid-weight motorcycles, scooters and commuters who want a keyless, reprogrammable lock with extra internal space and a supplemental cable. It's ideal for people who park in public areas and need flexibility to secure frames and wheels, and for anyone who prefers a combination system over carrying keys.