Jax (Charlie Hunnam) is always seen wearing white Nike Air Force 1 sneakers throughout the entire series, which is a very notable part of his look. However, in the pilot, he is seen wearing black Adidas, low-top sneakers.
SAMCRO stands for Sons of Anarchy Motorcycle Club Redwood Original
David Labrava has been riding motorcycles for 30 years, and was hired to be the Technical Advisor for Sons of Anarchy. Long before working with SOA, David was a full fledged member of the Hell's Angels David was then cast as "Happy," and has been with the show since its inception.
Scott Glenn was originally supposed to play the Clay Morrow role. All of Glen's scenes in the pilot got recorded again with Ron Perlman. In the explosion scene at the Mayan depot in the end, it is possible to see Glen (and Emilio Rivera, who would become Marcus Alvarez.
In the original Sons Of Anarchy Pilot screen play the opening scene was going to be a home movie of John Teller and the club but was cut out.