The RC4 Pro Transponder, specially designed to take any RC Racer to the next level. The MYLAPS transponder is used in all vehicles on the track to identify the racer and record their results. View attachment 3282 MYLAPS Speedhive is the platform where RC racers can get more insights in their race performance. With the Speedhive app and web services you can track races, find your practice results, compare results and share your progress with friends. All vehicles on the track are... MyLaps RC4 Pro Transponder Continue reading...