Carl this is the replacement EBC # FA271R Hookedonjuice posted awhile back for the HL disk brakes. Sand will wear them out fast. Most any atv shop should be able to get these.
Here is a set on ebay.
<a class="postlink" href="http://cgi.ebay.com/ebaymotors/EBC-Sintered-R-Brake-Pads-FA271R-60309_W0QQitemZ4612610161QQihZ002QQcategoryZ35592QQssPageNameZWD1VQQrdZ1QQcmdZVi
ewItem">http://cgi.ebay.com/ebaymotors/EBC-Sint ... dZViewItem</a>
Here is a set on ebay.
<a class="postlink" href="http://cgi.ebay.com/ebaymotors/EBC-Sintered-R-Brake-Pads-FA271R-60309_W0QQitemZ4612610161QQihZ002QQcategoryZ35592QQssPageNameZWD1VQQrdZ1QQcmdZVi
ewItem">http://cgi.ebay.com/ebaymotors/EBC-Sint ... dZViewItem</a>