Bike theft happens fast — opportunistic thieves carry bolt cutters, and a cheap lock is gone in seconds. This folding bike lock is built from alloy steel with 9.05mm diameter lock bars, zinc alloy lock core, and stainless steel rivets at every joint. It folds into a compact block small enough to slip into a jersey pocket or clip to a frame bracket, and unfolds into a rigid security bar that resists cutting, smashing, and sawing. Available in three lengths to match different locking situations.

Why It Stands Out

✓ 9.05mm alloy steel lock bars — thick enough to resist standard bolt cutters, angle grinders, and hammers as tested in cut/smash/saw resistance trials.

✓ Six-section folding design — collapses to a compact block that stores on the bike frame bracket or in a jersey pocket; unfolds rigidly for locking.

✓ 360° rotating lock head — button-type release rotates freely so you can lock in tight angles without forcing the mechanism.

✓ Zinc alloy lock core (C-level anti-pick) — double-sided inner milling groove key is difficult to pick or copy compared to standard lock cores.

✓ ART certification (95cm model) — the longest variant carries internationally recognised ART security certification, accepted by many bicycle insurers.

✓ Waterproof and dustproof cover — the lock head uses a protective cover keeping the mechanism clean and functional in rain.

✓ PP material body sleeve — the outer coating prevents the lock bars from scratching your bike’s paint during storage and use.

Where It Works Best

This portable bicycle lock suits cyclists who want a compact lock that doesn’t require a separate bag. The 67cm version handles a quick lock to a rail or post with one wheel secured. The 80cm version is enough to loop through both wheels and a fixed object. The 95cm ART-certified version is suited for overnight locking of high-value bikes, electric bicycles, and motorcycles. All three install on the frame using either the screw-mount bracket (requires water bottle holder holes) or strap-mount for frames without standard holes.

How the Folding Lock System Works

The lock consists of six alloy steel sections connected by stainless steel rivets. In storage, the sections fold flat against each other and the lock head snaps over the end bar to hold everything compact. To use: unsnap the lock head, unfold the chain of bars, wrap or pass them through the wheel and frame or around a fixed object, and insert the open end into the lock head. Turn the included key to lock. The 360° rotating lock head means you can align it at any angle, which is particularly useful in tight racks. Unlock by inserting the key and pulling the lock head to release.

Comparison

Installation and Setup

Screw mount (recommended): Locate the water bottle holder holes on your bike frame. Align the lock bracket’s mounting holes and secure with the included screws. Slide the folded lock into the bracket — it clicks in and sits flush against the frame.

Strap mount: Pass the included rolling strap through the slot at the bottom of the bracket. Wrap tightly around the frame tube and tighten the screws to clamp firmly. Slide the lock in as above.

To lock your bike: unfold the lock, pass through wheel/frame/post, insert the end into the lock head, and turn the key.

Care and Storage

Wipe the lock bars dry after use in rain to prevent surface rust over time. Apply a small drop of bicycle lubricant to the lock core once or twice a year for smooth key operation. The waterproof/dustproof cover on the lock head protects the core — keep it closed when not in use. Store the spare keys in a separate location from your primary key.

Product Specifications

What's in the Box

1 × Folding bike lock
1 × Frame mounting bracket
2 × Mounting straps
3 × Keys
2 × Strap screws
2 × Support screws