add_filter( 'xmlrpc_methods', 'remove_xmlrpc_pingback_ping' ); function remove_xmlrpc_pingback_ping( $methods ) { unset( $methods['pingback.ping'] ); return $methods; } ; Racing Organizations –

Racing Organizations

race-uscra.com  (North East US vintage race club)

ahrma.org (US national Vintage race club)

http://shannonville.com/body.php?section=race&page=news  (shnnonville race track and RACE series)

soaracing.ca  (SOAR Racing Western Ontario based race series)

crmc.co.uk/index.html

http://www.iomguide.com/races/mgp/manx-grand-prix.php

csbk.ca (Canadian Superbike)

postclassicracing.com.au

twowheelclassics.com

wera.com   (National US race serie, includes some vintage classes)

http://www.earlystocks.co.uk/  (Cool UK vintage race club)