Standard 18mm keyed u-lock with three keys

Updated 2026-09-05

This heavy-duty u-lock is engineered with an 18mm shackle to provide superior protection for electric and folding bikes. The thick diameter is specifically chosen to resist bolt cutters and other common theft tools. Its dimensions of 9.85 by 6.3 inches offer a generous locking area, making it easier to find secure anchor points in urban environments.

One of the standout features of this model is the inclusion of three separate keys. This provides the user with multiple backups, reducing the risk of being stranded if a key is misplaced. The locking mechanism is designed for precision and durability, offering a smooth engagement every time the shackle is inserted into the crossbar.

To ensure the lock is always at hand, a sturdy mounting bracket is provided for attachment to the bike frame. This bracket is designed to hold the 18mm shackle securely, preventing noise and movement while riding. The overall construction is focused on longevity, with materials that resist corrosion and physical wear over time.

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