MRT Transponder, Works with mylaps RC3 RC4 Through V4.4 System for RC car Rac...
$136.82
Perfect with all AMBrc systems and RC4 up to v4.4 (will not work with the v4.5 Drone System update). So you know they're good! Pop them in all your favorite cars. Compatibility: AMBrc2, AMBrc3 and RC4 systems.
