The original ZipZaps operated on one of two frequencies: namely 27 MHz and 49 MHz, so no more than two people can reliably race simultaneously. The SE series and monster trucks featured selectable frequencies within the 27 MHz band for up to six racers along with working headlights and taillights. The SE series had proportional control and used a pistol grip style remote control. Motors, tires and wheel covers (called "hubs") were interchangeable between regular ZipZaps and the SE series. The bodies were also interchangeable, but the lights on SE bodies obviously did not work on the regular chassis. Accessories such as lap counters, autocross pylons and carrying cases were available as well.