The Glider Shield (includes the seam cover) can only be mounted
in wheels that have a new inner ring molded into the front
and back panels for this purpose. Panels with this ring
started shipping in the second quarter of 2011. Panels
shipped before this will not work with the Glider
Shield. If you have an earlier wheel without the inner
rings, you can get a Retrofit Kit that includes the
Glider Shield (with seam cover) and the new front and
back panels with the inner ring. See the
Parts Order Form.