Hardened Steel U-Lock with Four Foot Extension Cable

Updated 2026-09-05

This versatile security set combines a 14 mm hardened steel shackle with a four foot extension cable for comprehensive protection. The U-lock component features a quad lock system that secures the shackle at four points, significantly increasing resistance against prying and twisting. The rubber-coated finish helps prevent the metal from scratching the paint on your bicycle frame.

The included cable allows users to secure additional components like the front wheel or a helmet while the main lock holds the frame. This dual-layer approach is ideal for high-traffic areas where extra deterrence is necessary. The locking mechanism is protected by a cylinder core designed to thwart picking attempts and ensure long-term reliability in various weather conditions.

Five laser-cut keys are provided with the set, including one equipped with a micro-LED light for easier operation in low-light environments. A multi-position mounting bracket is also included, making it simple to carry the heavy-duty lock on your bike. This combination of strength and flexibility makes it a popular choice for riders who prioritize maximum security and convenience.

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