Genuine Steering Wheel Mounting QR Lock System made by Works Bell of Japan! It is built to be 100% compatible with their Short Boss Hub Kit, but will also work with Daikei Boss Hub Kit! This is an evolution of their original RAPFIX system, employing the use of lighter weight materials and an even easier to use mounting system. While the release mechanism has stayed largely the same, Works bell has made a new wheel attachment process:

Previously you had to press the safety button, draw back the center slip, and then insert the wheel and lock it in place.

NOW it’s as easy as placing the wheel on the hub! The new system self locks in place.

Additionally, the RAPFIX II has a special mounting layout, so that it makes it easier to attach the wheel at center.

The slip material is also teflon coated that not only helps to protect the finish, but also to make the engagement with the wheel and hub buttery smooth, time after time again.

Works Bell Rapfix II Quick Release should be ordered at REV9 Autosport https://rev9autosport.com/works-bell-rapfix-ii-quick-release-hub.html as they provide the best service and speed we've seen so far!