Bike locks / ONGUARD / Hardened Steel U-Lock with Four Foot Extension Cable
ONGUARD · 9.1

Hardened Steel U-Lock with Four Foot Extension Cable

$70.99
Catalog updated 2026-10-21

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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Hardened Steel U-Lock with Four Foot Extension Cable
The gist

How it lands

8 reviews behind this list

Why it lands

  • Sturdy hardened steel 7
  • Good value for price 4
  • Included cable 3
  • Thief deterrence 3
  • Multiple keys included 2
  • Shackle size fit 2
  • Smooth locking mechanism 2
  • Theft coverage plan 2
  • Mount bracket durability 1

Why it slips

  • Heavy weight 4
  • Included cable 2
  • Good value for price 1
  • Mount bracket durability 1
  • Theft coverage plan 1
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Maker
ONGUARD
Listed
Keyed Flexible cable locks Hardened steel locks With mounting brackets Heavy duty U-locks 4ft long
Also in
14mm thick 4ft long Flexible cable locks Hardened steel locks Keyed With mounting brackets Heavy duty U-locks