How the Pinhead Locking System Works

Unlike a conventional U-lock, which only secures your bike frame, the Pinhead locking system secures your individual bike components from theft. The Pinhead bicycle locking system locks your front wheel, rear wheel, seat, and handlebars to your bicycle frame.

Each Pinhead locking component replaces the standard fastener (pin assembly or hex nut) that your bike was built with. Install the locking components, then forget they’re there. Once installed, the lightweight, unobtrusive Pinhead locking fasteners remain on your bicycle when you ride, protecting your components from theft. If you do need to remove a component for bike maintenance, your unique locking key lets you easily and quickly remove any component.

No more removing your wheels or seat each time you leave your bike in a vulnerable area! Pinhead’s patented locking fastener devices secure your components from theft.

Why Pinhead Locking Fasteners Work

Standard fasteners can be opened by anyone who has a set of standard tools. By contrast, Pinhead locking fasteners can only be opened by the unique key for that fastener. The Pinhead lock cannot be replicated or “picked” like a key lock and cannot be cut like a cable lock. It is installed and removed only with a specially coded key. In the event of a key loss, any registered product owner can readily order a replacement key through our secure website.

Pinhead locking fasteners are built using dozens of different and unique key mechanisms. To have any chance of unlocking your components, a thief would have to buy dozens of Pinhead locking sets and carry all the keys! Since all key replacements are tightly controlled, your bike is secure.

Suitable for All Types of Bikes

Pinhead bicycle component locks are convenient, inexpensive, and easy to use. Pinhead locks can be installed on all bicycles, including those with no wheel release system and those with existing quick release systems. The locking components are universal, functional, compact, durable, lightweight, and cost-efficient.

The Pinhead locking system is safer than quick-release systems, which can accidentally release if the release mechanism is bumped (for example, if a child is riding near low bushes) or if someone has tried to remove the wheel and failed.

Available Locking Products


The Pinhead bike wheel lock replaces standard quick-release devices, and provides one-time lock up for your wheel. The Pinhead wheel lock is unlocked (with your special key) only when you need to remove the wheel for repair.

The Pinhead bike seat lock replaces the standard seat clamp bolt, and provides one-time lock up for your seat. The Pinhead seat lock is unlocked (with your special key) only when you need to adjust your seat.

The Pinhead bike stem & fork lock replaces the standard headset hex-nut bolt, and provides one-time lock up for your entire front wheel assembly.  The Pinhead stem & forks lock is unlocked (with your special key) only when you need to remove your front wheel assembly.

Pinhead locking products are:

  • attractively finished
  • secure, because the products are manufactured using a wide variety of different key molds (just like the locks on houses)
  • unobtrusive
  • compact
  • light weight
  • inexpensive
  • pick-resistant
  • installed via an easy, one time installation
  • a universal fit to all bicycle models and sizes, new and old
  • built using high-strength stainless steel components
  • corrosion-resistant
  • constructed so that the key handle is a bottle opener (Pinhead says no Drinking & Driving!!)

Message from Pinhead: send bike thieves away empty-handed! Order your Pinhead bike locking components.