The radio control sytem is the essential thing you have to be careful before you buy it. Thundertiger can provide you with the famous Cougar Ps3i pistol type at 2.4GHZ with IBDC inteactive bi- Direction Communication system for your rc car model.With 10 memories capable and FHSS - Frequency hopping spread spectrum system . FSPC-Failsafe programmable individual channel system.Hitec rcd radio control systems in rc models . Lazer 4 ,and Lazer 6 propotional radio systems with frequency modulation and dual conversion receivers.Optic 6 and Optic 6 sport now at 2.4GHZ . If you are looking for 7channel radio control Eclipse 7 is just the right now for you. The Aurora 9 is the best value for money radio contol 9 channel with telemetry features touch screen pad and BODA system . In our store you will find a big range of tx , rx crystals .Transmitter's crystals , receiver's crystals single conversion and dual conversion too. But if you are looking for the Rolls-Royce radio control in the rc market then you have to choose Multiplex radio control .Starting from a Smart SX or Cockpit SX Royal Pro. to Profi Tx with m-link all with telemetry capable .