Cane Creek Ancora Expansion Plug

Yes, this expansion plug is specifically engineered for carbon steerer tubes. Its design provides the necessary support to prevent crushing or damaging the carbon material while maintaining a secure headset preload.

No, the Ancora is designed to be compatible with any standard preload bolt and top cap you already own. It functions as the internal anchor point for your existing headset hardware.

The knurled sleeve is designed to increase friction against the inner wall of the steerer tube. This ensures the plug stays firmly in place and does not slip once you have achieved the correct headset preload.

The Ancora is designed for standard carbon steerer tubes, but you should verify your fork's inner diameter requirements. With an insertion length of 46mm and a contact surface of 38mm, it provides a stable, reliable fit for most modern carbon forks.

Unlike a star nut, which is designed for metal steerer tubes and can damage carbon fiber, the Ancora uses an expansion wedge system. This allows for a secure, non-destructive fit that is essential for the structural integrity of carbon components.