This item is no longer available and was replace with the TR2 Kart rechargeable 5-year subscription transponder. https://store.livetimescoring.com/mylaps/MLP-10R915-mylaps-tr2-rechargeable-transponder-kart-5-year-subscription/
The X2 transponder is the latest generation of MyLaps race proven transponders. The X2 transponder offers two-way communication between the scoring system and the vehicle. This transponder is backwards compatible with all MyLaps decoder boxes.
This transponder comes with a 5-year subscription. Your transponder is covered by a full factory warranty for the duration of the subscription. If you prefer to power this transponder from your vehicles battery, choose the X2 transponder with direct power option (MLP-10R655).
NOTE: This transponder will ONLY work in Karting applications, or where your race director has specifically stated that they use Karting (yellow) transponders.