Frequently Asked Questions


What is a Pinhead key code?

Our locks use a special coded key that comes with each lockset. Each key is different and comes with an engraved nine-digit code. You should write down this key code and keep it in a safe place like a password.

Where do I find my key code?

Each key is engraved with an 8- or 9-digit key code.

How do I register my key code?

You can register your key code on our website free-of-charge so we always have a record of it for you.

Click below to register your key code.

What do I do if I lose my key?

If you know your key code, replacement keys and matching locks can be ordered online at

If you have lost your key code, but registered it on our website, then you should contact and we will search our data base to find it.

Can I order other locks to match my key code?

Yes. You can order matching locks so all your bikes are protected, and all can use the same key. Our online store provides a place to enter your key code.


What protection do I need for my bike?

We offer locks to protect the major components of all types of bicycles. As a minimum, you should protect your wheels and seat post, since these components can be easily removed with no special tools. Depending on the value of your bike, and the extent to which it is exposed to street theft, you should consider our saddle lock and or headset lock.

How do Pinhead locks work?

Pinhead locks are installed once and remain permanently on the bicycle, even when you ride. When you need to remove your wheels for servicing, or adjust your saddle height, your Pinhead key lets you do this quickly and easily.

How do I install my Pinhead locks?

An Installation Manual is supplied with each product, or you can download online.

Click below to download.

Why should I use Pinhead locks instead of those offered by competitors?

For over a decade, Pinhead locks have proven to provide the highest level of security for major bicycle components. They cannot be picked by any tool. All components are precision molded and forged from corrosion-resistant CrMo steel and aircraft aluminum alloys. We provide free security-upgrades, free lifetime replacement of any defective item, free online key code registration, live telephone and on-line technical support, and daily-shipment part replacement service depots in North America and Europe. We are the only locks to be specified as standard equipment by major bicycle brands sold world-wide.

What type of wheel locks do I need for my bike?

Your wheels are either quick-release or solid axle wheels, depending on how the wheels are attached. We offer locks for both types. Our quick release wheel locks replace your existing quick release devices. Our solid axle wheel locks replace the existing hex nuts.

Will your quick release wheel locks fit my bike?

Our quick release wheel locks fit all standard bicycle. Our front and rear wheel skewers are 125 mm and 168 mm long respectively, which fit all standard frames. These locks replace your existing quick release devices.

Will Pinhead wheel locks work with horizontal dropouts, suspension forks, or disk brakes?

Yes. Pinhead wheel locks are designed for these applications, and replace your existing quick release devices.

What size of solid axle wheel locks do I need?

Our solid axle wheel locks are available in three sizes defined by the axle diameter; 9 mm, 3/8” and 10 mm. Your front and rear axle diameter can be different. You can use a ruler to measure the diameter of your axles to determine the correct size(s) for your bike.

What size of seat post locks do I need for my bike?

Our seat post locks are available in 3 sizes, depending on the diameter of your seat tube; 28.6, 31.8 or 34.9 mm. You can use a ruler to measure the diameter of your seat tube to determine the correct size(s) for your bike. If you don’t know, we offer a universal seat post lock that fits all sizes.

What is a Saddle Lock?

Even with your seat post locked, your saddle can still be unbolted and removed from the seat post by a common wrench. If you have an expensive or treasured saddle, you should consider our Saddle Lock which prevents removal of your saddle from your seat post.

What is a Headset Lock?

The headset bolt on your bike is located on the top center of your handlebars. This bolt can easily be removed using a common 5 mm allen/hex wrench to remove the entire front fork and stem assembly which includes your front wheel, fork, stem, handlebars, etc. If you have an expensive bike, or it is frequently exposed to street theft, you should consider our Headset Lock which replaces the standard headset bolt and prevents removal of your front fork and stem assembly.

Where can I buy Pinhead products?

Pinhead products are sold by authorized retailers throughout North America, Europe, and Asia.

Our home page store locator will help you find a retailer near you.

Our products can also be ordered online at


How do I become a retailer or distributor for Pinhead?

Please contact us at


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