Anti-Theft Set – for Single Speed / Fixed Gear

The Hexlox Anti-Theft Set for single speed and fixie bikes was specially developed to reliably protect the wheels of bicycles with threaded axles from theft – ideal for urban fixie riders, track cycling enthusiasts and anyone who wants to park their bike worry-free.

The Hexnuts included in the set replace the existing axle nuts and feature a freely rotating outer shell that prevents access with pliers, wrenches, or other tools. Access to the socket screw is blocked by the Hexlox Insert that can only be removed with your personal Hexlox Key.

The system is compatible with common axle sizes such as M9, M10, and 3/8" (9.5 mm) and supports high torque up to 45 Nm. The hex nuts are available in black (aluminum shell) or silver (stainless steel shell) and blend seamlessly into the look of your bike.

Scope of delivery
Security Set (2 Hexnuts):

• 2 × Hexnut (suitable size and color selectable)
  
  

• 2 × 6 mm Hexlox Inserts
  
  

• 1 × Hexlox Key
  
  

• Weather protection caps
  
  

• Ribbed washers (for M9, M10)
  
  

Symmetry Set (4 Hexnuts):

• 4 × Hexnut (suitable size and color selectable)
  
  

• 2 × Hexlox Inserts 6 mm 
  
  

• 1 × Hexlox Key
  
  

• Weather protection caps
  
  

• Ribbed washers (for M9, M10)

Selection assistance & product advice
To determine the correct hex nut size for your bike, check the thread size of your current axle nuts. Common sizes are M9, M10, or 3/8" (9.5 mm). Select the appropriate hex nuts based on your axle size.

Technical support
Our support team consists of experienced bike enthusiasts who will quickly and personally assist you with any questions you may have about compatibility, assembly, or application. We are known for our friendly and competent customer service.

• Spinning Security Ring - Security against thieves equipped with pliers, vise grips, hammer, etc.

  Minimalism - (Weight Weenie Alert!) No more carrying around a spanner/wrench in your tool kit!

  Highest Grade Stainless Steel - We use the finest materials available, so you can keep on riding.

  Precision Engineering - Hexlox is designed and manufactured in security-conscious Germany.

  Real-World Security - Approved by Real People - We receive almost daily, positive feedback from people all over the world.

  
  

• Front Wheel - *Most front wheels use M9 (9mm axle diameter) If your front wheel nut also fits your back wheel, or it's for VanMoof, Miche, or DuraAce, then use M10 (10mm)

  Rear Wheel - *Most Rear wheels use M10 (10mm axle diameter)

  Shimano Alfine/Nexus Hubs - Use 3/8

  *For more technical info, see our size guide (above)

  Tip! - In case you get stuck picking the right products, we have created our super-user-friendly Selection Helper - a great tool to quickly get everything you need to secure your bike.