High security hardened steel frame lock

Updated 2026-09-05

This frame lock offers a permanent security solution that stays attached to the bicycle at all times. Constructed from specially hardened steel, the shackle provides a strong physical barrier against unauthorized use. It is designed to immobilize the rear wheel, making it an excellent choice for quick stops in low to medium risk areas.

The device features the advanced XPlus cylinder, which is engineered to provide high protection against manipulation and picking attempts. This keyed system ensures that only the owner can unlock the mechanism, providing peace of mind when leaving the bike unattended. The sleek black design integrates smoothly with the rear stays of most modern bicycle frames.

Installation is straightforward, and the lock remains rattle-free even on bumpy terrain. Because it is always fixed to the bike, there is no need to remember to pack a lock for every trip. This model is particularly popular for city bikes and e-bikes where convenience and consistent security are top priorities for the rider.

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