The 4th Annual SF Bike Expo is designed to take you back in time from when you first started riding a bike to the latest in offerings from bicycle companies to gravity defying feats of fearless riders to customs to classics. It gives exposure to small companies, provides competitions for kids, allows non-profits to deliver key messages and for many, it is their start into the world of cycling. Keep it simple! You may start on BMX and end up on road bike. Its all about the bike and the people that ride them.