Wear sneakers with soft, flat soles if you are using platform pedals. Flat soles will allow your feet to move around on the pedals without getting caught. Get a full-face helmet for maximum protection. It should fit comfortably without moving around when your head shakes. Find a gear bag that will carry all of your riding equipment, clothes and tools.
Light parts make the bike easier to handle and accelerate.
Strong parts will withstand all of the abuse that a BMX endures. And, unless you are rich, you need to stay in a certain price range. Shop around and check out what other riders are using. BMX racing is an inherently dangerous activity that can result in serious injury or death. We recommend that you seek proper training and equipment before attempting this activity.