This is the Kyosho MA-03EVO Mini-Z N-MM2 Brushless Chassis Set, equipped with a 8500kV Brushless motor. But this MR-03EVO Chassis Set has a separate receiver unit. By purchasing and installing an optional receiver unit depending on your preferred transmitter, it allows for using a Kyosho (KT-18/EX-6/EX-6R/KT-531P/KT-432PT), KO Propo (EX-2/EX-RR) or Futaba (T7PX/T7XC) transmitters.