The Thunderbike has made a double-dose of custom motorcycle industry history at the AMD World Championship this year
Sixth place went to Kenny Williams, KW Customs, of Angier, North Carolina, with 'Tantalizer', the much admired Mike Garrison 120 cubic inch engined 'bagger' with which he scooped the 2011 US Championship at Daytona Bike Week
Fifth place was scooped by Sweden's Claes Warefors and his collaborators KDK Performance with 'Gryphon', which features an 88 cubic inch Swedish built Mectec engine in a KDK built custom swingarm frame
