Park Tool 756S.2 Reaming Facer

This tool performs two critical tasks: reaming cleans out the inside diameter of the head tube to ensure a precise fit for headset cups, while facing smooths the outer edges to ensure they are perfectly parallel. This combination prevents headset play and premature bearing wear.

No, this specific model is designed for a 41.15mm diameter. Always verify your frame's head tube specifications before purchasing, as using the wrong size reamer can permanently damage your frame.

Yes, the 756S.2 is a cutter head that requires a compatible Park Tool handle or pilot system to operate. It is designed to be used as part of a complete Park Tool head tube preparation setup.

While it is built to professional-grade standards for daily workshop use, it is a great investment for the serious home mechanic building high-end bikes. If you are doing frequent headset installations or custom builds, the precision it offers is invaluable.

You should consider this process if you are installing a new headset and notice the cups are difficult to press in, or if you are experiencing persistent headset creaking. It is also standard practice when building a new frame to ensure the factory finish is perfectly square.