KL-BOX Box Lock w/ Bracket


SKU: KL-BOX / 713835033937

Quick Overview

Serfas® KL-BOX Box Lock w/ Bracket

Stainless steel rivets form hinges on each of the 5.5mm thick hardened steel articulating plates.

In its folded form the Box Lock is compact and takes up little space and can be conveniently stored via it’s included frame mount, when unfolded the lock opens up to a useful 2.5Ft length to secure your bike.

Includes frame mount with Velcro attachment straps or can be installed to standard water bottle mounts.

69 in stock (can be backordered)



Limited Lifetime Warranty
All Serfas® locks come with our Limited Lifetime Warranty to ensure your product is free of manufacturing and/or material defects.

Serfas® does not offer spare keys as locks are uniquely keyed during manufacturing. In the event of lost or stolen keys a new lock and key set much be purchased.


  • Hardened Steel Plates
  • Stainless Steel Rivets
  • Vinyl Coating Protects Frame
  • Frame Mount Installs w/ Velcro Straps Or Secures To Standard Water Bottle Mount Location
  • Compact Form Factor
  • Internal Cut Keys (2)


  • Lock Length: 2.5 Ft (76.2 cm)
  • Plate Link Thickness: 5.5mm (0.22 inch)
  • Weight: 554 Grams (1.2 lbs)
  • Key Type: Internal Cut
  • Security Rating: 6/10
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2 reviews for KL-BOX Box Lock w/ Bracket

  1. Jacob Jacques

    Solid lock. I love the easy mounting system and the reliable strong links. I just bought a second one to put on my wife’s city bike.

  2. Ivan Lopez

    I’ve been using this lock on my daily commutes to lock up my bike at work. The lock unfolds into a long cable-like lock once expanded, but when folded is actually much smaller in size compared to a traditional U-Lock. The lock’s compact size, and light weight, makes it very easy to carry in my backpack. If you don’t want to carry it on you, the lock’s mount is easy to install on the bike and holds the lock steady. I recommend this lock to anyone who is a daily commuter and will have their bike out for a couple of hours. It’s tough, light, and compact. All the qualities a bike commuter wants from a lock! Get this for some peace of mind. Safe Ride!

    • Serfas

      Thanks for the great feedback! – The Serfas Team

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