OSFA stands for One Size Fits All and is based around his 1967 Triumph TR6C. The idea is to race as many different disciplines with one bike, only changing wheels, tyres and handlebars. He's race the Catalina GP, Pikes Peak, short track, mile and motocross (maybe more that I've forgotten).
Find out more about the goggles and how to find them at The Barstow OSFA.
You can read about the first time Sideburn met Dimitri and his Triumph in Sideburn 5 (which we have a very small amount of very slight seconds on sale) and his about Pikes Peak race in Sideburn 10 or a portfolio of his work in Sideburn 20. And click the label with his name below to see lots of posts about this enthusiastic racer, photographer, father, do-er. Vive le Coste. G