What does CODE4 mean?

CODE 4 is primarily the "all clear" sign for police, fire fighters and medical fields to signal that a site/situation is under control.
Losely translated, it's the "everything is OK" sign.

With friends, family and sponsors in the Sherrif's department, Federal Marshals, Fire Fighters and Medical field we thought it brought a good focus to the work of those individuals in our lives, and it symbolizes our approach to both life and racing.... Take calculated risks, be there to support friends and family, make sure to enjoy what you do and at the end of the day.... everyting is CODE4.