Kalloy MTB-TK Seat Clamp with Bolt

You need to measure the outer diameter of your seat tube, not the seatpost itself. Most bike manufacturers stamp the size on the existing clamp, or you can use a digital caliper to measure the seat tube where the clamp sits.

While the clamp is made of CNC-machined aluminum, we generally recommend checking your frame manufacturer's specifications before using a bolt-on clamp on carbon frames. Carbon components often require specific torque settings and clamp types to prevent damage.

Yes, the Kalloy MTB-TK seat clamp includes a steel binder bolt, so it is ready to install right out of the package.

A bolt-on clamp provides a more secure, permanent hold that is less prone to slipping during aggressive riding. It also creates a cleaner, more streamlined look on your bike and is less likely to snag on clothing or trail debris.

You will need a standard hex key (Allen wrench) to tighten the binder bolt. It is always a good practice to use a torque wrench to ensure you do not overtighten the bolt, especially if you are clamping onto a lightweight frame.