Folding lock Kryptonite Keeper 585 — 850 mm length, steel housing, black

The Kryptonite Keeper 585 folding lock is an 850 mm security solution designed for bicycles and similar wheeled equipment. Built with a steel housing and folding links, it combines cut-resistant construction with a compact form that folds down for easier carrying. Weighing approximately 771 g, the Keeper 585 is intended for urban and commuting use where portability and moderate security are priorities.

Advantages

The steel housing and hardened folding links provide resistance to cutting and leverage tools while the 850 mm length offers flexibility to secure a bike to a variety of fixed objects. Its folding design reduces bulk compared with a full-length chain or U-lock, making it easier to stow in a bag or mount to a frame bracket. At around 771 g, it balances security and portability for everyday use.

Suitable for

• Securing city and commuter bicycles
• Locking children's bikes and scooters
• Short to medium-term parking in urban environments
• Carrying in backpacks or mounting to a frame bracket

Key specifications

• Overall folded length: 850 mm (when extended)
• Construction: steel housing with hardened folding links
• Weight: approximately 771 g
• Finish: black
• Locking mechanism: integrated key lock (single-cylinder)

How to use

Wrap the unfolded folding lock through the bike frame and around a secure fixed object such as a bike rack or solid post, then engage the locking mechanism by inserting and turning the key until fully seated. When not in use, fold the links along the hinge points to compact the lock for storage in a bag or attach it to a compatible frame mount. Regularly check the lock and keyway for dirt or corrosion and use a light lubricant if the mechanism becomes stiff.

Usage recommendations

For improved security, lock both the frame and at least one wheel to an immovable object and choose well-lit, busy locations for parking. Avoid leaving the lock exposed to prolonged moisture; store it dry when possible and inspect for wear periodically.