Our Most Popular Helmet - Best Value for Ventilation and Protection Our most popular helmet, the RZ-59 is ZAMPs entry level SA2020 helmet. This helmet is unbeatable for the price and works great for anything from dirt track to kart racing. Fully Stocked and Ready-to-Ship here at RacingDirect! Get the Look: ZAMP - RZ-59 SA2020 Racing Helmet ZAMP - Z20 Shields