You can secure the shift boot at any height that would become free when you replace the factory shift knob with an external product. The shift boot can be adjusted at any height to accommodate different types of shift knobs. Genuine shift knob cannot be used. The "Beatrush Shift Knob [Type QGK]" is not compatible with the Fit GK5. Note: Since it is made of aluminum, it is easily affected by heat, and the shift boot stopper may become very hot and cause burns. Please handle with care.