Big D - Texas Triumph building and racing institution

TR6R
'38 OK Supreme JAP
Ariel Square 4 600

From the blog: "The official blog of Big D cycle in Dallas, Texas. Here you can find information on projects we are working on, racing results and info, and whatever else we decide is internet worthy. Big D Cycle has been building the best Triumph competition bikes, emaculate British motorcycle restorations, and world speed record holding bikes since 1963"