Pinhead Seatpost Clamp

Unlike a standard quick-release lever that can be opened by hand, the Pinhead clamp requires a specific, proprietary key to loosen. This replaces the tool-free operation with a secure, keyed system that prevents opportunistic thieves from walking away with your seatpost and saddle.

The Pinhead seat collar is designed for broad compatibility across most standard bicycle frames. However, because seat tube diameters vary significantly between bike models, you should measure your current seatpost diameter or check your bike's specifications to ensure you select the correct size before purchasing.

Each Pinhead key is uniquely coded to your specific lock set. It is highly recommended that you register your key code with Pinhead immediately after purchase, which allows you to order a replacement key directly from the manufacturer if yours is ever lost or misplaced.

Installation is straightforward and typically requires only standard hex keys or wrenches to remove your existing clamp and tighten the Pinhead bolt. Once the bolt is installed, the proprietary key is the only tool needed to adjust or remove the seatpost in the future.

Yes, the clamp is engineered to provide a secure, reliable hold on your seatpost. When tightened correctly to your frame's torque specifications, it functions just as effectively as a standard bolt-on clamp while adding the benefit of theft protection.